merge: Update build and runtime dependencies (#107)

This pull request updates the build and runtime dependencies used by OpenDC to their latest 
version compatible with the project.

## Implementation Notes :hammer_and_pick:

* Update simulator dependency versions
* Remove unused distribution conventions
* Update next version to 3.0
* Eliminate use of wildcard imports
* Switch to Spotless for formatting

64 files changed, 551 insertions, 162 deletions

diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/TableWriter.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/TableWriter.kt
index a3122ec9..3b02794d 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/TableWriter.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/TableWriter.kt
@@ -24,7 +24,7 @@ package org.opendc.trace
 
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * Base class for writing workload traces.
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/InterferenceGroupColumns.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/InterferenceGroupColumns.kt
index 2a80687c..fbbfdea9 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/InterferenceGroupColumns.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/InterferenceGroupColumns.kt
@@ -21,6 +21,7 @@
  */
 
 @file:JvmName("InterferenceGroupColumns")
+
 package org.opendc.trace.conv
 
 /**
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/ResourceColumns.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/ResourceColumns.kt
index 9b7b8195..89f8dbc4 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/ResourceColumns.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/ResourceColumns.kt
@@ -21,6 +21,7 @@
  */
 
 @file:JvmName("ResourceColumns")
+
 package org.opendc.trace.conv
 
 /**
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/ResourceStateColumns.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/ResourceStateColumns.kt
index e9dd7673..5187d501 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/ResourceStateColumns.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/ResourceStateColumns.kt
@@ -21,6 +21,7 @@
  */
 
 @file:JvmName("ResourceStateColumns")
+
 package org.opendc.trace.conv
 
 /**
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/Tables.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/Tables.kt
index 669ebe58..495628da 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/Tables.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/Tables.kt
@@ -21,6 +21,7 @@
  */
 
 @file:JvmName("Tables")
+
 package org.opendc.trace.conv
 
 /**
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/TaskColumns.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/TaskColumns.kt
index da5c343f..6ca87a60 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/TaskColumns.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/conv/TaskColumns.kt
@@ -21,6 +21,7 @@
  */
 
 @file:JvmName("TaskColumns")
+
 package org.opendc.trace.conv
 
 /**
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/internal/TableImpl.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/internal/TableImpl.kt
index 1e1bf676..099c1939 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/internal/TableImpl.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/internal/TableImpl.kt
@@ -26,7 +26,7 @@ import org.opendc.trace.Table
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableReader
 import org.opendc.trace.TableWriter
-import java.util.*
+import java.util.Objects
 
 /**
  * Internal implementation of [Table].
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/internal/TraceImpl.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/internal/TraceImpl.kt
index fd9536ab..8f9752ae 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/internal/TraceImpl.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/internal/TraceImpl.kt
@@ -26,7 +26,7 @@ import org.opendc.trace.Table
 import org.opendc.trace.Trace
 import org.opendc.trace.spi.TraceFormat
 import java.nio.file.Path
-import java.util.*
+import java.util.Objects
 import java.util.concurrent.ConcurrentHashMap
 
 /**
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/spi/TraceFormat.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/spi/TraceFormat.kt
index 26e81cf8..46ef051d 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/spi/TraceFormat.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/spi/TraceFormat.kt
@@ -25,7 +25,7 @@ package org.opendc.trace.spi
 import org.opendc.trace.TableReader
 import org.opendc.trace.TableWriter
 import java.nio.file.Path
-import java.util.*
+import java.util.ServiceLoader
 
 /**
  * A service-provider class for parsing trace formats.
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/util/CompositeTableReader.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/util/CompositeTableReader.kt
index c4854265..2fe820c4 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/util/CompositeTableReader.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/util/CompositeTableReader.kt
@@ -25,7 +25,7 @@ package org.opendc.trace.util
 import org.opendc.trace.TableReader
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A helper class to chain multiple [TableReader]s.
diff --git a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/util/TableColumnConversion.kt b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/util/TableColumnConversion.kt
index 8ef080b5..26739e34 100644
--- a/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/util/TableColumnConversion.kt
+++ b/opendc-trace/opendc-trace-api/src/main/kotlin/org/opendc/trace/util/TableColumnConversion.kt
@@ -21,6 +21,7 @@
  */
 
 @file:JvmName("TableColumnConversions")
+
 package org.opendc.trace.util
 
 import org.opendc.trace.TableColumnType
diff --git a/opendc-trace/opendc-trace-azure/src/jmh/kotlin/org/opendc/trace/azure/AzureTraceBenchmarks.kt b/opendc-trace/opendc-trace-azure/src/jmh/kotlin/org/opendc/trace/azure/AzureTraceBenchmarks.kt
index 4fcdce30..6759f38a 100644
--- a/opendc-trace/opendc-trace-azure/src/jmh/kotlin/org/opendc/trace/azure/AzureTraceBenchmarks.kt
+++ b/opendc-trace/opendc-trace-azure/src/jmh/kotlin/org/opendc/trace/azure/AzureTraceBenchmarks.kt
@@ -22,9 +22,17 @@
 
 package org.opendc.trace.azure
 
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.TABLE_RESOURCES
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import org.opendc.trace.spi.TraceFormat
-import org.openjdk.jmh.annotations.*
+import org.openjdk.jmh.annotations.Benchmark
+import org.openjdk.jmh.annotations.Fork
+import org.openjdk.jmh.annotations.Measurement
+import org.openjdk.jmh.annotations.Scope
+import org.openjdk.jmh.annotations.Setup
+import org.openjdk.jmh.annotations.State
+import org.openjdk.jmh.annotations.Warmup
 import org.openjdk.jmh.infra.Blackhole
 import java.nio.file.Path
 import java.util.concurrent.TimeUnit
diff --git a/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureResourceStateTableReader.kt b/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureResourceStateTableReader.kt
index c0c67329..0c60c75d 100644
--- a/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureResourceStateTableReader.kt
+++ b/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureResourceStateTableReader.kt
@@ -25,13 +25,13 @@ package org.opendc.trace.azure
 import com.fasterxml.jackson.core.JsonToken
 import com.fasterxml.jackson.dataformat.csv.CsvParser
 import com.fasterxml.jackson.dataformat.csv.CsvSchema
-import org.opendc.trace.*
+import org.opendc.trace.TableReader
 import org.opendc.trace.conv.RESOURCE_ID
 import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE_PCT
 import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableReader] for the Azure v1 VM resource state table.
diff --git a/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureResourceTableReader.kt b/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureResourceTableReader.kt
index a8451301..c0acb67a 100644
--- a/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureResourceTableReader.kt
+++ b/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureResourceTableReader.kt
@@ -25,11 +25,15 @@ package org.opendc.trace.azure
 import com.fasterxml.jackson.core.JsonToken
 import com.fasterxml.jackson.dataformat.csv.CsvParser
 import com.fasterxml.jackson.dataformat.csv.CsvSchema
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableReader
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_START_TIME
+import org.opendc.trace.conv.RESOURCE_STOP_TIME
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableReader] for the Azure v1 VM resources table.
diff --git a/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureTraceFormat.kt b/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureTraceFormat.kt
index 2294e4a4..3f64c640 100644
--- a/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureTraceFormat.kt
+++ b/opendc-trace/opendc-trace-azure/src/main/kotlin/org/opendc/trace/azure/AzureTraceFormat.kt
@@ -24,8 +24,19 @@ package org.opendc.trace.azure
 
 import com.fasterxml.jackson.dataformat.csv.CsvFactory
 import com.fasterxml.jackson.dataformat.csv.CsvParser
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumn
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_START_TIME
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE_PCT
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
+import org.opendc.trace.conv.RESOURCE_STOP_TIME
+import org.opendc.trace.conv.TABLE_RESOURCES
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import org.opendc.trace.spi.TableDetails
 import org.opendc.trace.spi.TraceFormat
 import org.opendc.trace.util.CompositeTableReader
@@ -66,14 +77,14 @@ public class AzureTraceFormat : TraceFormat {
                     TableColumn(RESOURCE_START_TIME, TableColumnType.Instant),
                     TableColumn(RESOURCE_STOP_TIME, TableColumnType.Instant),
                     TableColumn(RESOURCE_CPU_COUNT, TableColumnType.Int),
-                    TableColumn(RESOURCE_MEM_CAPACITY, TableColumnType.Double),
+                    TableColumn(RESOURCE_MEM_CAPACITY, TableColumnType.Double)
                 )
             )
             TABLE_RESOURCE_STATES -> TableDetails(
                 listOf(
                     TableColumn(RESOURCE_ID, TableColumnType.String),
                     TableColumn(RESOURCE_STATE_TIMESTAMP, TableColumnType.Instant),
-                    TableColumn(RESOURCE_STATE_CPU_USAGE_PCT, TableColumnType.Double),
+                    TableColumn(RESOURCE_STATE_CPU_USAGE_PCT, TableColumnType.Double)
                 )
             )
             else -> throw IllegalArgumentException("Table $table not supported")
diff --git a/opendc-trace/opendc-trace-azure/src/test/kotlin/org/opendc/trace/azure/AzureTraceFormatTest.kt b/opendc-trace/opendc-trace-azure/src/test/kotlin/org/opendc/trace/azure/AzureTraceFormatTest.kt
index 06ba047a..00cdc174 100644
--- a/opendc-trace/opendc-trace-azure/src/test/kotlin/org/opendc/trace/azure/AzureTraceFormatTest.kt
+++ b/opendc-trace/opendc-trace-azure/src/test/kotlin/org/opendc/trace/azure/AzureTraceFormatTest.kt
@@ -22,12 +22,24 @@
 
 package org.opendc.trace.azure
 
-import org.junit.jupiter.api.*
-import org.junit.jupiter.api.Assertions.*
 import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertDoesNotThrow
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableReader
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE_PCT
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
+import org.opendc.trace.conv.TABLE_RESOURCES
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import org.opendc.trace.testkit.TableReaderTestKit
 import java.nio.file.Paths
 
@@ -66,7 +78,7 @@ class AzureTraceFormatTest {
             { assertTrue(reader.nextRow()) },
             { assertEquals("x/XsOfHO4ocsV99i4NluqKDuxctW2MMVmwqOPAlg4wp8mqbBOe3wxBlQo0+Qx+uf", reader.getString(RESOURCE_ID)) },
             { assertEquals(1, reader.getInt(RESOURCE_CPU_COUNT)) },
-            { assertEquals(1750000.0, reader.getDouble(RESOURCE_MEM_CAPACITY)) },
+            { assertEquals(1750000.0, reader.getDouble(RESOURCE_MEM_CAPACITY)) }
         )
 
         reader.close()
diff --git a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExResourceStateTableReader.kt b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExResourceStateTableReader.kt
index df7a1c91..511f02db 100644
--- a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExResourceStateTableReader.kt
+++ b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExResourceStateTableReader.kt
@@ -22,12 +22,23 @@
 
 package org.opendc.trace.bitbrains
 
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableReader
+import org.opendc.trace.conv.RESOURCE_CLUSTER_ID
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_DEMAND
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_READY_PCT
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE_PCT
+import org.opendc.trace.conv.RESOURCE_STATE_DISK_READ
+import org.opendc.trace.conv.RESOURCE_STATE_DISK_WRITE
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
 import java.io.BufferedReader
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableReader] for the Bitbrains resource state table.
diff --git a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormat.kt b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormat.kt
index 31c4f1e2..d364694c 100644
--- a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormat.kt
+++ b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormat.kt
@@ -22,8 +22,23 @@
 
 package org.opendc.trace.bitbrains
 
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumn
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.RESOURCE_CLUSTER_ID
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_DEMAND
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_READY_PCT
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE_PCT
+import org.opendc.trace.conv.RESOURCE_STATE_DISK_READ
+import org.opendc.trace.conv.RESOURCE_STATE_DISK_WRITE
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import org.opendc.trace.spi.TableDetails
 import org.opendc.trace.spi.TraceFormat
 import org.opendc.trace.util.CompositeTableReader
@@ -64,7 +79,7 @@ public class BitbrainsExTraceFormat : TraceFormat {
                     TableColumn(RESOURCE_STATE_CPU_READY_PCT, TableColumnType.Double),
                     TableColumn(RESOURCE_MEM_CAPACITY, TableColumnType.Double),
                     TableColumn(RESOURCE_STATE_DISK_READ, TableColumnType.Double),
-                    TableColumn(RESOURCE_STATE_DISK_WRITE, TableColumnType.Double),
+                    TableColumn(RESOURCE_STATE_DISK_WRITE, TableColumnType.Double)
                 )
             )
             else -> throw IllegalArgumentException("Table $table not supported")
diff --git a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsResourceStateTableReader.kt b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsResourceStateTableReader.kt
index 4d8cf758..65ca8a9c 100644
--- a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsResourceStateTableReader.kt
+++ b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsResourceStateTableReader.kt
@@ -26,8 +26,19 @@ import com.fasterxml.jackson.core.JsonParseException
 import com.fasterxml.jackson.core.JsonToken
 import com.fasterxml.jackson.dataformat.csv.CsvParser
 import com.fasterxml.jackson.dataformat.csv.CsvSchema
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableReader
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE_PCT
+import org.opendc.trace.conv.RESOURCE_STATE_DISK_READ
+import org.opendc.trace.conv.RESOURCE_STATE_DISK_WRITE
+import org.opendc.trace.conv.RESOURCE_STATE_MEM_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_NET_RX
+import org.opendc.trace.conv.RESOURCE_STATE_NET_TX
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
 import java.text.NumberFormat
 import java.time.Duration
 import java.time.Instant
@@ -35,7 +46,8 @@ import java.time.LocalDateTime
 import java.time.ZoneOffset
 import java.time.format.DateTimeFormatter
 import java.time.format.DateTimeParseException
-import java.util.*
+import java.util.Locale
+import java.util.UUID
 
 /**
  * A [TableReader] for the Bitbrains resource state table.
diff --git a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsResourceTableReader.kt b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsResourceTableReader.kt
index 7454c40f..776a8f86 100644
--- a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsResourceTableReader.kt
+++ b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsResourceTableReader.kt
@@ -23,12 +23,12 @@
 package org.opendc.trace.bitbrains
 
 import com.fasterxml.jackson.dataformat.csv.CsvFactory
-import org.opendc.trace.*
+import org.opendc.trace.TableReader
 import org.opendc.trace.conv.RESOURCE_ID
 import java.nio.file.Path
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableReader] for the Bitbrains resource table.
diff --git a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormat.kt b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormat.kt
index f3030893..b0809735 100644
--- a/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormat.kt
+++ b/opendc-trace/opendc-trace-bitbrains/src/main/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormat.kt
@@ -24,8 +24,24 @@ package org.opendc.trace.bitbrains
 
 import com.fasterxml.jackson.dataformat.csv.CsvFactory
 import com.fasterxml.jackson.dataformat.csv.CsvParser
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumn
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE_PCT
+import org.opendc.trace.conv.RESOURCE_STATE_DISK_READ
+import org.opendc.trace.conv.RESOURCE_STATE_DISK_WRITE
+import org.opendc.trace.conv.RESOURCE_STATE_MEM_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_NET_RX
+import org.opendc.trace.conv.RESOURCE_STATE_NET_TX
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
+import org.opendc.trace.conv.TABLE_RESOURCES
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import org.opendc.trace.spi.TableDetails
 import org.opendc.trace.spi.TraceFormat
 import org.opendc.trace.util.CompositeTableReader
@@ -77,8 +93,8 @@ public class BitbrainsTraceFormat : TraceFormat {
                     TableColumn(RESOURCE_STATE_DISK_READ, TableColumnType.Double),
                     TableColumn(RESOURCE_STATE_DISK_WRITE, TableColumnType.Double),
                     TableColumn(RESOURCE_STATE_NET_RX, TableColumnType.Double),
-                    TableColumn(RESOURCE_STATE_NET_TX, TableColumnType.Double),
-                ),
+                    TableColumn(RESOURCE_STATE_NET_TX, TableColumnType.Double)
+                )
             )
             else -> throw IllegalArgumentException("Table $table not supported")
         }
diff --git a/opendc-trace/opendc-trace-bitbrains/src/test/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormatTest.kt b/opendc-trace/opendc-trace-bitbrains/src/test/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormatTest.kt
index dbb75c50..e8c7094b 100644
--- a/opendc-trace/opendc-trace-bitbrains/src/test/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormatTest.kt
+++ b/opendc-trace/opendc-trace-bitbrains/src/test/kotlin/org/opendc/trace/bitbrains/BitbrainsExTraceFormatTest.kt
@@ -22,9 +22,15 @@
 
 package org.opendc.trace.bitbrains
 
-import org.junit.jupiter.api.*
-import org.junit.jupiter.api.Assertions.*
 import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertDoesNotThrow
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableReader
 import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
diff --git a/opendc-trace/opendc-trace-bitbrains/src/test/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormatTest.kt b/opendc-trace/opendc-trace-bitbrains/src/test/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormatTest.kt
index 712e1fcb..edab8747 100644
--- a/opendc-trace/opendc-trace-bitbrains/src/test/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormatTest.kt
+++ b/opendc-trace/opendc-trace-bitbrains/src/test/kotlin/org/opendc/trace/bitbrains/BitbrainsTraceFormatTest.kt
@@ -22,12 +22,23 @@
 
 package org.opendc.trace.bitbrains
 
-import org.junit.jupiter.api.*
-import org.junit.jupiter.api.Assertions.*
 import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertDoesNotThrow
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableReader
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
+import org.opendc.trace.conv.TABLE_RESOURCES
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import org.opendc.trace.testkit.TableReaderTestKit
 import java.nio.file.Paths
 
diff --git a/opendc-trace/opendc-trace-calcite/src/main/kotlin/org/opendc/trace/calcite/TraceTable.kt b/opendc-trace/opendc-trace-calcite/src/main/kotlin/org/opendc/trace/calcite/TraceTable.kt
index dfcc22a3..2dd02710 100644
--- a/opendc-trace/opendc-trace-calcite/src/main/kotlin/org/opendc/trace/calcite/TraceTable.kt
+++ b/opendc-trace/opendc-trace-calcite/src/main/kotlin/org/opendc/trace/calcite/TraceTable.kt
@@ -25,7 +25,11 @@ package org.opendc.trace.calcite
 import org.apache.calcite.DataContext
 import org.apache.calcite.adapter.java.AbstractQueryableTable
 import org.apache.calcite.adapter.java.JavaTypeFactory
-import org.apache.calcite.linq4j.*
+import org.apache.calcite.linq4j.AbstractEnumerable
+import org.apache.calcite.linq4j.Enumerable
+import org.apache.calcite.linq4j.Enumerator
+import org.apache.calcite.linq4j.QueryProvider
+import org.apache.calcite.linq4j.Queryable
 import org.apache.calcite.plan.RelOptCluster
 import org.apache.calcite.plan.RelOptTable
 import org.apache.calcite.prepare.Prepare.CatalogReader
@@ -35,14 +39,16 @@ import org.apache.calcite.rel.logical.LogicalTableModify
 import org.apache.calcite.rel.type.RelDataType
 import org.apache.calcite.rel.type.RelDataTypeFactory
 import org.apache.calcite.rex.RexNode
-import org.apache.calcite.schema.*
+import org.apache.calcite.schema.ModifiableTable
+import org.apache.calcite.schema.ProjectableFilterableTable
+import org.apache.calcite.schema.SchemaPlus
 import org.apache.calcite.schema.impl.AbstractTableQueryable
 import org.apache.calcite.sql.type.SqlTypeName
 import org.opendc.trace.TableColumnType
 import java.nio.ByteBuffer
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 import java.util.concurrent.atomic.AtomicBoolean
 
 /**
diff --git a/opendc-trace/opendc-trace-calcite/src/main/kotlin/org/opendc/trace/calcite/TraceTableModify.kt b/opendc-trace/opendc-trace-calcite/src/main/kotlin/org/opendc/trace/calcite/TraceTableModify.kt
index 64dc0cea..cc23854f 100644
--- a/opendc-trace/opendc-trace-calcite/src/main/kotlin/org/opendc/trace/calcite/TraceTableModify.kt
+++ b/opendc-trace/opendc-trace-calcite/src/main/kotlin/org/opendc/trace/calcite/TraceTableModify.kt
@@ -22,14 +22,22 @@
 
 package org.opendc.trace.calcite
 
-import org.apache.calcite.adapter.enumerable.*
+import org.apache.calcite.adapter.enumerable.EnumerableRel
 import org.apache.calcite.adapter.enumerable.EnumerableRel.Prefer
+import org.apache.calcite.adapter.enumerable.EnumerableRelImplementor
+import org.apache.calcite.adapter.enumerable.EnumerableTableScan
+import org.apache.calcite.adapter.enumerable.JavaRowFormat
+import org.apache.calcite.adapter.enumerable.PhysTypeImpl
 import org.apache.calcite.adapter.java.JavaTypeFactory
 import org.apache.calcite.linq4j.Enumerable
 import org.apache.calcite.linq4j.tree.BlockBuilder
 import org.apache.calcite.linq4j.tree.Expressions
 import org.apache.calcite.linq4j.tree.Types
-import org.apache.calcite.plan.*
+import org.apache.calcite.plan.RelOptCluster
+import org.apache.calcite.plan.RelOptCost
+import org.apache.calcite.plan.RelOptPlanner
+import org.apache.calcite.plan.RelOptTable
+import org.apache.calcite.plan.RelTraitSet
 import org.apache.calcite.prepare.Prepare
 import org.apache.calcite.rel.RelNode
 import org.apache.calcite.rel.core.TableModify
@@ -118,7 +126,7 @@ internal class TraceTableModify(
                         Long::class.java,
                         expression,
                         INSERT_METHOD,
-                        convertedChildExpr,
+                        convertedChildExpr
                     )
                 )
             )
diff --git a/opendc-trace/opendc-trace-calcite/src/test/kotlin/org/opendc/trace/calcite/CalciteTest.kt b/opendc-trace/opendc-trace-calcite/src/test/kotlin/org/opendc/trace/calcite/CalciteTest.kt
index d8729034..64bb31c9 100644
--- a/opendc-trace/opendc-trace-calcite/src/test/kotlin/org/opendc/trace/calcite/CalciteTest.kt
+++ b/opendc-trace/opendc-trace-calcite/src/test/kotlin/org/opendc/trace/calcite/CalciteTest.kt
@@ -25,7 +25,11 @@ package org.opendc.trace.calcite
 import io.mockk.every
 import io.mockk.mockk
 import org.apache.calcite.jdbc.CalciteConnection
-import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertArrayEquals
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.Test
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableColumnType
@@ -40,7 +44,8 @@ import java.sql.Statement
 import java.sql.Timestamp
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.Properties
+import java.util.UUID
 
 /**
  * Smoke test for Apache Calcite integration.
@@ -81,7 +86,7 @@ class CalciteTest {
                 { assertEquals(300000, rs.getLong("duration")) },
                 { assertEquals(0.0, rs.getDouble("cpu_usage")) },
                 { assertTrue(rs.next()) },
-                { assertEquals("1019", rs.getString("id")) },
+                { assertEquals("1019", rs.getString("id")) }
             )
         }
     }
@@ -93,7 +98,7 @@ class CalciteTest {
                 { assertTrue(rs.next()) },
                 { assertArrayEquals(arrayOf("1019", "1023", "1052"), rs.getArray("members").array as Array<*>) },
                 { assertEquals(0.0, rs.getDouble("target")) },
-                { assertEquals(0.8830158730158756, rs.getDouble("score")) },
+                { assertEquals(0.8830158730158756, rs.getDouble("score")) }
             )
         }
     }
@@ -104,7 +109,7 @@ class CalciteTest {
             assertAll(
                 { assertTrue(rs.next()) },
                 { assertEquals(249.59993808, rs.getDouble("max_cpu_usage")) },
-                { assertEquals(5.387240309118493, rs.getDouble("avg_cpu_usage")) },
+                { assertEquals(5.387240309118493, rs.getDouble("avg_cpu_usage")) }
             )
         }
     }
@@ -209,7 +214,7 @@ class CalciteTest {
         runQuery(trace, "SELECT id FROM trace.resources") { rs ->
             assertAll(
                 { assertTrue(rs.next()) },
-                { assertArrayEquals(byteArrayOf(0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2), rs.getBytes("id")) },
+                { assertArrayEquals(byteArrayOf(0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 2), rs.getBytes("id")) }
             )
         }
     }
diff --git a/opendc-trace/opendc-trace-calcite/src/test/kotlin/org/opendc/trace/calcite/TraceSchemaFactoryTest.kt b/opendc-trace/opendc-trace-calcite/src/test/kotlin/org/opendc/trace/calcite/TraceSchemaFactoryTest.kt
index 0a552e74..735cedce 100644
--- a/opendc-trace/opendc-trace-calcite/src/test/kotlin/org/opendc/trace/calcite/TraceSchemaFactoryTest.kt
+++ b/opendc-trace/opendc-trace-calcite/src/test/kotlin/org/opendc/trace/calcite/TraceSchemaFactoryTest.kt
@@ -22,12 +22,14 @@
 
 package org.opendc.trace.calcite
 
-import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertThrows
 import java.sql.DriverManager
 import java.sql.Timestamp
-import java.util.*
+import java.util.Properties
 
 /**
  * Test suite for [TraceSchemaFactory].
@@ -46,7 +48,7 @@ class TraceSchemaFactoryTest {
                 { assertEquals("1019", rs.getString("id")) },
                 { assertEquals(1, rs.getInt("cpu_count")) },
                 { assertEquals(Timestamp.valueOf("2013-08-12 13:40:46.0"), rs.getTimestamp("start_time")) },
-                { assertEquals(181352.0, rs.getDouble("mem_capacity")) },
+                { assertEquals(181352.0, rs.getDouble("mem_capacity")) }
             )
         } finally {
             rs.close()
diff --git a/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTaskTableReader.kt b/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTaskTableReader.kt
index f9a171e9..78ce6ad4 100644
--- a/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTaskTableReader.kt
+++ b/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTaskTableReader.kt
@@ -25,12 +25,19 @@ package org.opendc.trace.gwf
 import com.fasterxml.jackson.core.JsonToken
 import com.fasterxml.jackson.dataformat.csv.CsvParser
 import com.fasterxml.jackson.dataformat.csv.CsvSchema
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.conv.TASK_ALLOC_NCPUS
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_REQ_NCPUS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_SUBMIT_TIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 import org.opendc.trace.util.convertTo
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 import java.util.regex.Pattern
 
 /**
diff --git a/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTraceFormat.kt b/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTraceFormat.kt
index ca63b624..d2ded0ee 100644
--- a/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTraceFormat.kt
+++ b/opendc-trace/opendc-trace-gwf/src/main/kotlin/org/opendc/trace/gwf/GwfTraceFormat.kt
@@ -24,8 +24,18 @@ package org.opendc.trace.gwf
 
 import com.fasterxml.jackson.dataformat.csv.CsvFactory
 import com.fasterxml.jackson.dataformat.csv.CsvParser
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumn
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.TABLE_TASKS
+import org.opendc.trace.conv.TASK_ALLOC_NCPUS
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_REQ_NCPUS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_SUBMIT_TIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 import org.opendc.trace.spi.TableDetails
 import org.opendc.trace.spi.TraceFormat
 import java.nio.file.Path
@@ -62,7 +72,7 @@ public class GwfTraceFormat : TraceFormat {
                     TableColumn(TASK_RUNTIME, TableColumnType.Duration),
                     TableColumn(TASK_REQ_NCPUS, TableColumnType.Int),
                     TableColumn(TASK_ALLOC_NCPUS, TableColumnType.Int),
-                    TableColumn(TASK_PARENTS, TableColumnType.Set(TableColumnType.String)),
+                    TableColumn(TASK_PARENTS, TableColumnType.Set(TableColumnType.String))
                 )
             )
             else -> throw IllegalArgumentException("Table $table not supported")
diff --git a/opendc-trace/opendc-trace-gwf/src/test/kotlin/org/opendc/trace/gwf/GwfTraceFormatTest.kt b/opendc-trace/opendc-trace-gwf/src/test/kotlin/org/opendc/trace/gwf/GwfTraceFormatTest.kt
index a8c3a715..c75e86df 100644
--- a/opendc-trace/opendc-trace-gwf/src/test/kotlin/org/opendc/trace/gwf/GwfTraceFormatTest.kt
+++ b/opendc-trace/opendc-trace-gwf/src/test/kotlin/org/opendc/trace/gwf/GwfTraceFormatTest.kt
@@ -22,11 +22,23 @@
 
 package org.opendc.trace.gwf
 
-import org.junit.jupiter.api.*
-import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertDoesNotThrow
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableReader
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.TABLE_TASKS
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_SUBMIT_TIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 import org.opendc.trace.testkit.TableReaderTestKit
 import java.nio.file.Paths
 import java.time.Duration
@@ -70,7 +82,7 @@ internal class GwfTraceFormatTest {
             { assertEquals("1", reader.getString(TASK_ID)) },
             { assertEquals(Instant.ofEpochSecond(16), reader.getInstant(TASK_SUBMIT_TIME)) },
             { assertEquals(Duration.ofSeconds(11), reader.getDuration(TASK_RUNTIME)) },
-            { assertEquals(emptySet<String>(), reader.getSet(TASK_PARENTS, String::class.java)) },
+            { assertEquals(emptySet<String>(), reader.getSet(TASK_PARENTS, String::class.java)) }
         )
     }
 
@@ -89,7 +101,7 @@ internal class GwfTraceFormatTest {
             { assertEquals("7", reader.getString(TASK_ID)) },
             { assertEquals(Instant.ofEpochSecond(87), reader.getInstant(TASK_SUBMIT_TIME)) },
             { assertEquals(Duration.ofSeconds(11), reader.getDuration(TASK_RUNTIME)) },
-            { assertEquals(setOf("4", "5", "6"), reader.getSet(TASK_PARENTS, String::class.java)) },
+            { assertEquals(setOf("4", "5", "6"), reader.getSet(TASK_PARENTS, String::class.java)) }
         )
     }
 
diff --git a/opendc-trace/opendc-trace-opendc/src/jmh/kotlin/org/opendc/trace/opendc/OdcVmTraceBenchmarks.kt b/opendc-trace/opendc-trace-opendc/src/jmh/kotlin/org/opendc/trace/opendc/OdcVmTraceBenchmarks.kt
index b9b22931..e504cf2f 100644
--- a/opendc-trace/opendc-trace-opendc/src/jmh/kotlin/org/opendc/trace/opendc/OdcVmTraceBenchmarks.kt
+++ b/opendc-trace/opendc-trace-opendc/src/jmh/kotlin/org/opendc/trace/opendc/OdcVmTraceBenchmarks.kt
@@ -22,9 +22,19 @@
 
 package org.opendc.trace.opendc
 
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.INTERFERENCE_GROUP_SCORE
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.TABLE_INTERFERENCE_GROUPS
+import org.opendc.trace.conv.TABLE_RESOURCES
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import org.opendc.trace.spi.TraceFormat
-import org.openjdk.jmh.annotations.*
+import org.openjdk.jmh.annotations.Benchmark
+import org.openjdk.jmh.annotations.Fork
+import org.openjdk.jmh.annotations.Measurement
+import org.openjdk.jmh.annotations.Scope
+import org.openjdk.jmh.annotations.Setup
+import org.openjdk.jmh.annotations.State
+import org.openjdk.jmh.annotations.Warmup
 import org.openjdk.jmh.infra.Blackhole
 import java.nio.file.Path
 import java.util.concurrent.TimeUnit
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmInterferenceJsonTableReader.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmInterferenceJsonTableReader.kt
index d4858f23..3e1fca06 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmInterferenceJsonTableReader.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmInterferenceJsonTableReader.kt
@@ -25,14 +25,15 @@ package org.opendc.trace.opendc
 import com.fasterxml.jackson.core.JsonParseException
 import com.fasterxml.jackson.core.JsonParser
 import com.fasterxml.jackson.core.JsonToken
-import org.opendc.trace.*
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
 import org.opendc.trace.conv.INTERFERENCE_GROUP_MEMBERS
 import org.opendc.trace.conv.INTERFERENCE_GROUP_SCORE
 import org.opendc.trace.conv.INTERFERENCE_GROUP_TARGET
 import org.opendc.trace.util.convertTo
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableReader] implementation for the OpenDC VM interference JSON format.
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmInterferenceJsonTableWriter.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmInterferenceJsonTableWriter.kt
index d5e8a0b6..c6905c5b 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmInterferenceJsonTableWriter.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmInterferenceJsonTableWriter.kt
@@ -23,13 +23,13 @@
 package org.opendc.trace.opendc
 
 import com.fasterxml.jackson.core.JsonGenerator
-import org.opendc.trace.*
+import org.opendc.trace.TableWriter
 import org.opendc.trace.conv.INTERFERENCE_GROUP_MEMBERS
 import org.opendc.trace.conv.INTERFERENCE_GROUP_SCORE
 import org.opendc.trace.conv.INTERFERENCE_GROUP_TARGET
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableWriter] implementation for the OpenDC VM interference JSON format.
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceStateTableReader.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceStateTableReader.kt
index b256047f..ff9a98d7 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceStateTableReader.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceStateTableReader.kt
@@ -22,13 +22,17 @@
 
 package org.opendc.trace.opendc
 
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableReader
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_DURATION
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
 import org.opendc.trace.opendc.parquet.ResourceState
 import org.opendc.trace.util.parquet.LocalParquetReader
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableReader] implementation for the OpenDC virtual machine trace format.
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceStateTableWriter.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceStateTableWriter.kt
index 30375de0..cf0a401b 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceStateTableWriter.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceStateTableWriter.kt
@@ -23,12 +23,16 @@
 package org.opendc.trace.opendc
 
 import org.apache.parquet.hadoop.ParquetWriter
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_DURATION
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
 import org.opendc.trace.opendc.parquet.ResourceState
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableWriter] implementation for the OpenDC virtual machine trace format.
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceTableReader.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceTableReader.kt
index 76fdbca8..d4613158 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceTableReader.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceTableReader.kt
@@ -22,13 +22,18 @@
 
 package org.opendc.trace.opendc
 
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableReader
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_START_TIME
+import org.opendc.trace.conv.RESOURCE_STOP_TIME
 import org.opendc.trace.opendc.parquet.Resource
 import org.opendc.trace.util.parquet.LocalParquetReader
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableReader] implementation for the "resources table" in the OpenDC virtual machine trace format.
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceTableWriter.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceTableWriter.kt
index 8117c3cd..73a03891 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceTableWriter.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmResourceTableWriter.kt
@@ -23,12 +23,17 @@
 package org.opendc.trace.opendc
 
 import org.apache.parquet.hadoop.ParquetWriter
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_START_TIME
+import org.opendc.trace.conv.RESOURCE_STOP_TIME
 import org.opendc.trace.opendc.parquet.Resource
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableWriter] implementation for the OpenDC virtual machine trace format.
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmTraceFormat.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmTraceFormat.kt
index 2c5f892b..c4790538 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmTraceFormat.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/OdcVmTraceFormat.kt
@@ -27,8 +27,25 @@ import com.fasterxml.jackson.core.JsonFactory
 import org.apache.parquet.column.ParquetProperties
 import org.apache.parquet.hadoop.ParquetFileWriter
 import org.apache.parquet.hadoop.metadata.CompressionCodecName
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumn
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.INTERFERENCE_GROUP_MEMBERS
+import org.opendc.trace.conv.INTERFERENCE_GROUP_SCORE
+import org.opendc.trace.conv.INTERFERENCE_GROUP_TARGET
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_START_TIME
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_DURATION
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
+import org.opendc.trace.conv.RESOURCE_STOP_TIME
+import org.opendc.trace.conv.TABLE_INTERFERENCE_GROUPS
+import org.opendc.trace.conv.TABLE_RESOURCES
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import org.opendc.trace.opendc.parquet.ResourceReadSupport
 import org.opendc.trace.opendc.parquet.ResourceStateReadSupport
 import org.opendc.trace.opendc.parquet.ResourceStateWriteSupport
@@ -78,7 +95,7 @@ public class OdcVmTraceFormat : TraceFormat {
                     TableColumn(RESOURCE_STOP_TIME, TableColumnType.Instant),
                     TableColumn(RESOURCE_CPU_COUNT, TableColumnType.Int),
                     TableColumn(RESOURCE_CPU_CAPACITY, TableColumnType.Double),
-                    TableColumn(RESOURCE_MEM_CAPACITY, TableColumnType.Double),
+                    TableColumn(RESOURCE_MEM_CAPACITY, TableColumnType.Double)
                 )
             )
             TABLE_RESOURCE_STATES -> TableDetails(
@@ -87,14 +104,14 @@ public class OdcVmTraceFormat : TraceFormat {
                     TableColumn(RESOURCE_STATE_TIMESTAMP, TableColumnType.Instant),
                     TableColumn(RESOURCE_STATE_DURATION, TableColumnType.Duration),
                     TableColumn(RESOURCE_CPU_COUNT, TableColumnType.Int),
-                    TableColumn(RESOURCE_STATE_CPU_USAGE, TableColumnType.Double),
+                    TableColumn(RESOURCE_STATE_CPU_USAGE, TableColumnType.Double)
                 )
             )
             TABLE_INTERFERENCE_GROUPS -> TableDetails(
                 listOf(
                     TableColumn(INTERFERENCE_GROUP_MEMBERS, TableColumnType.Set(TableColumnType.String)),
                     TableColumn(INTERFERENCE_GROUP_TARGET, TableColumnType.Double),
-                    TableColumn(INTERFERENCE_GROUP_SCORE, TableColumnType.Double),
+                    TableColumn(INTERFERENCE_GROUP_SCORE, TableColumnType.Double)
                 )
             )
             else -> throw IllegalArgumentException("Table $table not supported")
@@ -113,10 +130,11 @@ public class OdcVmTraceFormat : TraceFormat {
             }
             TABLE_INTERFERENCE_GROUPS -> {
                 val modelPath = path.resolve("interference-model.json")
-                val parser = if (modelPath.exists())
+                val parser = if (modelPath.exists()) {
                     jsonFactory.createParser(modelPath.toFile())
-                else
+                } else {
                     jsonFactory.createParser("[]") // If model does not exist, return empty model
+                }
 
                 OdcVmInterferenceJsonTableReader(parser)
             }
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceReadSupport.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceReadSupport.kt
index 8a8ed790..52911d5f 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceReadSupport.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceReadSupport.kt
@@ -26,9 +26,17 @@ import org.apache.hadoop.conf.Configuration
 import org.apache.parquet.hadoop.api.InitContext
 import org.apache.parquet.hadoop.api.ReadSupport
 import org.apache.parquet.io.api.RecordMaterializer
-import org.apache.parquet.schema.*
+import org.apache.parquet.schema.LogicalTypeAnnotation
+import org.apache.parquet.schema.MessageType
+import org.apache.parquet.schema.PrimitiveType
+import org.apache.parquet.schema.Types
 import org.opendc.trace.TableColumn
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_START_TIME
+import org.opendc.trace.conv.RESOURCE_STOP_TIME
 
 /**
  * A [ReadSupport] instance for [Resource] objects.
@@ -47,7 +55,7 @@ internal class ResourceReadSupport(private val projection: List<String>?) : Read
         "cpu_count" to RESOURCE_CPU_COUNT,
         "cpu_capacity" to RESOURCE_CPU_CAPACITY,
         "requiredMemory" to RESOURCE_MEM_CAPACITY,
-        "mem_capacity" to RESOURCE_MEM_CAPACITY,
+        "mem_capacity" to RESOURCE_MEM_CAPACITY
     )
 
     override fun init(context: InitContext): ReadContext {
@@ -103,7 +111,7 @@ internal class ResourceReadSupport(private val projection: List<String>?) : Read
                     .named("maxCores"),
                 Types
                     .required(PrimitiveType.PrimitiveTypeName.INT64)
-                    .named("requiredMemory"),
+                    .named("requiredMemory")
             )
             .named("resource")
 
@@ -133,7 +141,7 @@ internal class ResourceReadSupport(private val projection: List<String>?) : Read
                     .named("cpu_capacity"),
                 Types
                     .required(PrimitiveType.PrimitiveTypeName.INT64)
-                    .named("mem_capacity"),
+                    .named("mem_capacity")
             )
             .named("resource")
 
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceRecordMaterializer.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceRecordMaterializer.kt
index 3adb0709..936a684a 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceRecordMaterializer.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceRecordMaterializer.kt
@@ -22,7 +22,11 @@
 
 package org.opendc.trace.opendc.parquet
 
-import org.apache.parquet.io.api.*
+import org.apache.parquet.io.api.Binary
+import org.apache.parquet.io.api.Converter
+import org.apache.parquet.io.api.GroupConverter
+import org.apache.parquet.io.api.PrimitiveConverter
+import org.apache.parquet.io.api.RecordMaterializer
 import org.apache.parquet.schema.MessageType
 import java.time.Instant
 
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateReadSupport.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateReadSupport.kt
index 78adc649..56366cd8 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateReadSupport.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateReadSupport.kt
@@ -26,9 +26,16 @@ import org.apache.hadoop.conf.Configuration
 import org.apache.parquet.hadoop.api.InitContext
 import org.apache.parquet.hadoop.api.ReadSupport
 import org.apache.parquet.io.api.RecordMaterializer
-import org.apache.parquet.schema.*
+import org.apache.parquet.schema.LogicalTypeAnnotation
+import org.apache.parquet.schema.MessageType
+import org.apache.parquet.schema.PrimitiveType
+import org.apache.parquet.schema.Types
 import org.opendc.trace.TableColumn
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_DURATION
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
 
 /**
  * A [ReadSupport] instance for [ResourceState] objects.
@@ -45,7 +52,7 @@ internal class ResourceStateReadSupport(private val projection: List<String>?) :
         "cores" to RESOURCE_CPU_COUNT,
         "cpu_count" to RESOURCE_CPU_COUNT,
         "cpuUsage" to RESOURCE_STATE_CPU_USAGE,
-        "cpu_usage" to RESOURCE_STATE_CPU_USAGE,
+        "cpu_usage" to RESOURCE_STATE_CPU_USAGE
     )
 
     override fun init(context: InitContext): ReadContext {
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateRecordMaterializer.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateRecordMaterializer.kt
index f8b0c3c2..a813a5af 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateRecordMaterializer.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateRecordMaterializer.kt
@@ -22,7 +22,11 @@
 
 package org.opendc.trace.opendc.parquet
 
-import org.apache.parquet.io.api.*
+import org.apache.parquet.io.api.Binary
+import org.apache.parquet.io.api.Converter
+import org.apache.parquet.io.api.GroupConverter
+import org.apache.parquet.io.api.PrimitiveConverter
+import org.apache.parquet.io.api.RecordMaterializer
 import org.apache.parquet.schema.MessageType
 import java.time.Duration
 import java.time.Instant
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateWriteSupport.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateWriteSupport.kt
index e2f3df31..0bbec4d2 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateWriteSupport.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceStateWriteSupport.kt
@@ -26,7 +26,10 @@ import org.apache.hadoop.conf.Configuration
 import org.apache.parquet.hadoop.api.WriteSupport
 import org.apache.parquet.io.api.Binary
 import org.apache.parquet.io.api.RecordConsumer
-import org.apache.parquet.schema.*
+import org.apache.parquet.schema.LogicalTypeAnnotation
+import org.apache.parquet.schema.MessageType
+import org.apache.parquet.schema.PrimitiveType
+import org.apache.parquet.schema.Types
 
 /**
  * Support for writing [Resource] instances to Parquet format.
diff --git a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceWriteSupport.kt b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceWriteSupport.kt
index 14cadabb..cd428754 100644
--- a/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceWriteSupport.kt
+++ b/opendc-trace/opendc-trace-opendc/src/main/kotlin/org/opendc/trace/opendc/parquet/ResourceWriteSupport.kt
@@ -26,7 +26,10 @@ import org.apache.hadoop.conf.Configuration
 import org.apache.parquet.hadoop.api.WriteSupport
 import org.apache.parquet.io.api.Binary
 import org.apache.parquet.io.api.RecordConsumer
-import org.apache.parquet.schema.*
+import org.apache.parquet.schema.LogicalTypeAnnotation
+import org.apache.parquet.schema.MessageType
+import org.apache.parquet.schema.PrimitiveType
+import org.apache.parquet.schema.Types
 import kotlin.math.roundToLong
 
 /**
@@ -107,7 +110,7 @@ internal class ResourceWriteSupport : WriteSupport<Resource>() {
                     .named("cpu_capacity"),
                 Types
                     .required(PrimitiveType.PrimitiveTypeName.INT64)
-                    .named("mem_capacity"),
+                    .named("mem_capacity")
             )
             .named("resource")
     }
diff --git a/opendc-trace/opendc-trace-opendc/src/test/kotlin/org/opendc/trace/opendc/OdcVmTraceFormatTest.kt b/opendc-trace/opendc-trace-opendc/src/test/kotlin/org/opendc/trace/opendc/OdcVmTraceFormatTest.kt
index 9fdffb2b..d3c3b35b 100644
--- a/opendc-trace/opendc-trace-opendc/src/test/kotlin/org/opendc/trace/opendc/OdcVmTraceFormatTest.kt
+++ b/opendc-trace/opendc-trace-opendc/src/test/kotlin/org/opendc/trace/opendc/OdcVmTraceFormatTest.kt
@@ -22,7 +22,10 @@
 
 package org.opendc.trace.opendc
 
-import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.DisplayName
 import org.junit.jupiter.api.Nested
@@ -34,7 +37,20 @@ import org.junit.jupiter.params.provider.ValueSource
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableReader
 import org.opendc.trace.TableWriter
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.INTERFERENCE_GROUP_MEMBERS
+import org.opendc.trace.conv.INTERFERENCE_GROUP_SCORE
+import org.opendc.trace.conv.INTERFERENCE_GROUP_TARGET
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_START_TIME
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
+import org.opendc.trace.conv.RESOURCE_STOP_TIME
+import org.opendc.trace.conv.TABLE_INTERFERENCE_GROUPS
+import org.opendc.trace.conv.TABLE_RESOURCES
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import org.opendc.trace.testkit.TableReaderTestKit
 import org.opendc.trace.testkit.TableWriterTestKit
 import java.nio.file.Files
@@ -115,7 +131,7 @@ internal class OdcVmTraceFormatTest {
             { assertEquals(1, reader.getInt(RESOURCE_CPU_COUNT)) },
             { assertEquals(1024.0, reader.getDouble(RESOURCE_CPU_CAPACITY)) },
             { assertEquals(1024.0, reader.getDouble(RESOURCE_MEM_CAPACITY)) },
-            { assertFalse(reader.nextRow()) },
+            { assertFalse(reader.nextRow()) }
         )
 
         reader.close()
@@ -162,7 +178,7 @@ internal class OdcVmTraceFormatTest {
             { assertEquals(Instant.EPOCH, reader.getInstant(RESOURCE_STATE_TIMESTAMP)) },
             { assertEquals(1, reader.getInt(RESOURCE_CPU_COUNT)) },
             { assertEquals(23.0, reader.getDouble(RESOURCE_STATE_CPU_USAGE)) },
-            { assertFalse(reader.nextRow()) },
+            { assertFalse(reader.nextRow()) }
         )
 
         reader.close()
@@ -231,7 +247,7 @@ internal class OdcVmTraceFormatTest {
             { assertEquals(setOf("a", "b", "d"), reader.getSet(INTERFERENCE_GROUP_MEMBERS, String::class.java)) },
             { assertEquals(0.5, reader.getDouble(INTERFERENCE_GROUP_TARGET)) },
             { assertEquals(0.9, reader.getDouble(INTERFERENCE_GROUP_SCORE)) },
-            { assertFalse(reader.nextRow()) },
+            { assertFalse(reader.nextRow()) }
         )
 
         reader.close()
diff --git a/opendc-trace/opendc-trace-parquet/src/main/kotlin/org/opendc/trace/util/parquet/LocalParquetReader.kt b/opendc-trace/opendc-trace-parquet/src/main/kotlin/org/opendc/trace/util/parquet/LocalParquetReader.kt
index eef83956..031bad60 100644
--- a/opendc-trace/opendc-trace-parquet/src/main/kotlin/org/opendc/trace/util/parquet/LocalParquetReader.kt
+++ b/opendc-trace/opendc-trace-parquet/src/main/kotlin/org/opendc/trace/util/parquet/LocalParquetReader.kt
@@ -46,14 +46,15 @@ public class LocalParquetReader<out T>(
     /**
      * The input files to process.
      */
-    private val filesIterator = if (path.isDirectory())
+    private val filesIterator = if (path.isDirectory()) {
         Files.list(path)
             .filter { !it.isDirectory() }
             .sorted()
             .map { LocalInputFile(it) }
             .iterator()
-    else
+    } else {
         listOf(LocalInputFile(path)).iterator()
+    }
 
     /**
      * The Parquet reader to use.
@@ -76,10 +77,11 @@ public class LocalParquetReader<out T>(
             } else {
                 initReader()
 
-                if (reader == null)
+                if (reader == null) {
                     null
-                else
+                } else {
                     read()
+                }
             }
         } catch (e: InterruptedException) {
             throw IOException(e)
diff --git a/opendc-trace/opendc-trace-parquet/src/test/kotlin/org/opendc/trace/util/parquet/ParquetTest.kt b/opendc-trace/opendc-trace-parquet/src/test/kotlin/org/opendc/trace/util/parquet/ParquetTest.kt
index 29fcac96..b6c5a423 100644
--- a/opendc-trace/opendc-trace-parquet/src/test/kotlin/org/opendc/trace/util/parquet/ParquetTest.kt
+++ b/opendc-trace/opendc-trace-parquet/src/test/kotlin/org/opendc/trace/util/parquet/ParquetTest.kt
@@ -35,8 +35,11 @@ import org.apache.parquet.schema.MessageType
 import org.apache.parquet.schema.PrimitiveType
 import org.apache.parquet.schema.Type
 import org.apache.parquet.schema.Types
-import org.junit.jupiter.api.*
+import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
 import java.nio.file.FileAlreadyExistsException
 import java.nio.file.Files
 import java.nio.file.NoSuchFileException
diff --git a/opendc-trace/opendc-trace-swf/src/main/kotlin/org/opendc/trace/swf/SwfTaskTableReader.kt b/opendc-trace/opendc-trace-swf/src/main/kotlin/org/opendc/trace/swf/SwfTaskTableReader.kt
index b2734fe7..2465fb47 100644
--- a/opendc-trace/opendc-trace-swf/src/main/kotlin/org/opendc/trace/swf/SwfTaskTableReader.kt
+++ b/opendc-trace/opendc-trace-swf/src/main/kotlin/org/opendc/trace/swf/SwfTaskTableReader.kt
@@ -22,12 +22,21 @@
 
 package org.opendc.trace.swf
 
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableReader
+import org.opendc.trace.conv.TASK_ALLOC_NCPUS
+import org.opendc.trace.conv.TASK_GROUP_ID
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_REQ_NCPUS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_STATUS
+import org.opendc.trace.conv.TASK_SUBMIT_TIME
+import org.opendc.trace.conv.TASK_USER_ID
+import org.opendc.trace.conv.TASK_WAIT_TIME
 import java.io.BufferedReader
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableReader] implementation for the SWF format.
diff --git a/opendc-trace/opendc-trace-swf/src/main/kotlin/org/opendc/trace/swf/SwfTraceFormat.kt b/opendc-trace/opendc-trace-swf/src/main/kotlin/org/opendc/trace/swf/SwfTraceFormat.kt
index 575a1740..c51805d7 100644
--- a/opendc-trace/opendc-trace-swf/src/main/kotlin/org/opendc/trace/swf/SwfTraceFormat.kt
+++ b/opendc-trace/opendc-trace-swf/src/main/kotlin/org/opendc/trace/swf/SwfTraceFormat.kt
@@ -22,8 +22,21 @@
 
 package org.opendc.trace.swf
 
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumn
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.TABLE_TASKS
+import org.opendc.trace.conv.TASK_ALLOC_NCPUS
+import org.opendc.trace.conv.TASK_GROUP_ID
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_REQ_NCPUS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_STATUS
+import org.opendc.trace.conv.TASK_SUBMIT_TIME
+import org.opendc.trace.conv.TASK_USER_ID
+import org.opendc.trace.conv.TASK_WAIT_TIME
 import org.opendc.trace.spi.TableDetails
 import org.opendc.trace.spi.TraceFormat
 import java.nio.file.Path
diff --git a/opendc-trace/opendc-trace-swf/src/test/kotlin/org/opendc/trace/swf/SwfTraceFormatTest.kt b/opendc-trace/opendc-trace-swf/src/test/kotlin/org/opendc/trace/swf/SwfTraceFormatTest.kt
index 06a500d8..71d6dee3 100644
--- a/opendc-trace/opendc-trace-swf/src/test/kotlin/org/opendc/trace/swf/SwfTraceFormatTest.kt
+++ b/opendc-trace/opendc-trace-swf/src/test/kotlin/org/opendc/trace/swf/SwfTraceFormatTest.kt
@@ -22,8 +22,15 @@
 
 package org.opendc.trace.swf
 
-import org.junit.jupiter.api.*
-import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertDoesNotThrow
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableReader
 import org.opendc.trace.conv.TABLE_TASKS
@@ -70,7 +77,7 @@ internal class SwfTraceFormatTest {
             { assertEquals(306, reader.getInt(TASK_ALLOC_NCPUS)) },
             { assertTrue(reader.nextRow()) },
             { assertEquals("2", reader.getString(TASK_ID)) },
-            { assertEquals(17, reader.getInt(TASK_ALLOC_NCPUS)) },
+            { assertEquals(17, reader.getInt(TASK_ALLOC_NCPUS)) }
         )
 
         reader.close()
diff --git a/opendc-trace/opendc-trace-testkit/src/main/kotlin/org/opendc/trace/testkit/TableReaderTestKit.kt b/opendc-trace/opendc-trace-testkit/src/main/kotlin/org/opendc/trace/testkit/TableReaderTestKit.kt
index 291ca2b1..4624cba0 100644
--- a/opendc-trace/opendc-trace-testkit/src/main/kotlin/org/opendc/trace/testkit/TableReaderTestKit.kt
+++ b/opendc-trace/opendc-trace-testkit/src/main/kotlin/org/opendc/trace/testkit/TableReaderTestKit.kt
@@ -22,11 +22,15 @@
 
 package org.opendc.trace.testkit
 
-import org.junit.jupiter.api.*
-import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.AfterEach
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertNotEquals
 import org.junit.jupiter.api.Assumptions.assumeTrue
+import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertAll
 import org.junit.jupiter.api.assertDoesNotThrow
+import org.junit.jupiter.api.assertThrows
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableColumnType
 import org.opendc.trace.TableReader
@@ -85,7 +89,7 @@ public abstract class TableReaderTestKit {
             { assertThrows<IllegalArgumentException> { reader.getDuration(-1) } },
             { assertThrows<IllegalArgumentException> { reader.getList(-1, Any::class.java) } },
             { assertThrows<IllegalArgumentException> { reader.getSet(-1, Any::class.java) } },
-            { assertThrows<IllegalArgumentException> { reader.getMap(-1, Any::class.java, Any::class.java) } },
+            { assertThrows<IllegalArgumentException> { reader.getMap(-1, Any::class.java, Any::class.java) } }
         )
     }
 
diff --git a/opendc-trace/opendc-trace-testkit/src/main/kotlin/org/opendc/trace/testkit/TableWriterTestKit.kt b/opendc-trace/opendc-trace-testkit/src/main/kotlin/org/opendc/trace/testkit/TableWriterTestKit.kt
index fab992f0..3cd05f50 100644
--- a/opendc-trace/opendc-trace-testkit/src/main/kotlin/org/opendc/trace/testkit/TableWriterTestKit.kt
+++ b/opendc-trace/opendc-trace-testkit/src/main/kotlin/org/opendc/trace/testkit/TableWriterTestKit.kt
@@ -23,7 +23,8 @@
 package org.opendc.trace.testkit
 
 import org.junit.jupiter.api.AfterEach
-import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertNotEquals
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertAll
 import org.junit.jupiter.api.assertThrows
@@ -32,7 +33,7 @@ import org.opendc.trace.TableColumnType
 import org.opendc.trace.TableWriter
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A test suite for implementations of the [TableWriter] interface.
@@ -87,7 +88,7 @@ public abstract class TableWriterTestKit {
             { assertThrows<IllegalArgumentException> { writer.setDuration(-1, Duration.ofMinutes(5)) } },
             { assertThrows<IllegalArgumentException> { writer.setList(-1, listOf("test")) } },
             { assertThrows<IllegalArgumentException> { writer.setSet(-1, setOf("test")) } },
-            { assertThrows<IllegalArgumentException> { writer.setMap(-1, mapOf("test" to "test")) } },
+            { assertThrows<IllegalArgumentException> { writer.setMap(-1, mapOf("test" to "test")) } }
         )
     }
 
diff --git a/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/ConvertCommand.kt b/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/ConvertCommand.kt
index b6d661e0..bf0e2e3b 100644
--- a/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/ConvertCommand.kt
+++ b/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/ConvertCommand.kt
@@ -28,15 +28,34 @@ import com.github.ajalt.clikt.parameters.groups.OptionGroup
 import com.github.ajalt.clikt.parameters.groups.cooccurring
 import com.github.ajalt.clikt.parameters.groups.defaultByName
 import com.github.ajalt.clikt.parameters.groups.groupChoice
-import com.github.ajalt.clikt.parameters.options.*
-import com.github.ajalt.clikt.parameters.types.*
+import com.github.ajalt.clikt.parameters.options.default
+import com.github.ajalt.clikt.parameters.options.defaultLazy
+import com.github.ajalt.clikt.parameters.options.option
+import com.github.ajalt.clikt.parameters.options.required
+import com.github.ajalt.clikt.parameters.types.double
+import com.github.ajalt.clikt.parameters.types.file
+import com.github.ajalt.clikt.parameters.types.long
+import com.github.ajalt.clikt.parameters.types.restrictTo
 import mu.KotlinLogging
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableWriter
+import org.opendc.trace.Trace
+import org.opendc.trace.conv.RESOURCE_CPU_CAPACITY
+import org.opendc.trace.conv.RESOURCE_CPU_COUNT
+import org.opendc.trace.conv.RESOURCE_ID
+import org.opendc.trace.conv.RESOURCE_MEM_CAPACITY
+import org.opendc.trace.conv.RESOURCE_START_TIME
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_CPU_USAGE_PCT
+import org.opendc.trace.conv.RESOURCE_STATE_DURATION
+import org.opendc.trace.conv.RESOURCE_STATE_MEM_USAGE
+import org.opendc.trace.conv.RESOURCE_STATE_TIMESTAMP
+import org.opendc.trace.conv.RESOURCE_STOP_TIME
+import org.opendc.trace.conv.TABLE_RESOURCES
+import org.opendc.trace.conv.TABLE_RESOURCE_STATES
 import java.io.File
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.Random
 import kotlin.collections.HashMap
 import kotlin.math.abs
 import kotlin.math.max
@@ -86,7 +105,7 @@ internal class ConvertCommand : CliktCommand(name = "convert", help = "Convert b
      */
     private val converter by option("-c", "--converter", help = "converter strategy to use").groupChoice(
         "default" to DefaultTraceConverter(),
-        "azure" to AzureTraceConverter(),
+        "azure" to AzureTraceConverter()
     ).defaultByName("default")
 
     override fun run() {
diff --git a/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/QueryCommand.kt b/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/QueryCommand.kt
index b0f95de2..98b4cdf5 100644
--- a/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/QueryCommand.kt
+++ b/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/QueryCommand.kt
@@ -40,7 +40,7 @@ import java.nio.charset.StandardCharsets
 import java.sql.DriverManager
 import java.sql.ResultSet
 import java.sql.ResultSetMetaData
-import java.util.*
+import java.util.Properties
 
 /**
  * A [CliktCommand] that allows users to query workload traces using SQL.
@@ -121,7 +121,7 @@ internal class QueryCommand : CliktCommand(name = "query", help = "Query workloa
 
         val options = mapOf(
             Printer.COLUMNS to List(meta.columnCount) { meta.getColumnName(it + 1) },
-            Printer.BORDER to "|",
+            Printer.BORDER to "|"
         )
         val data = mutableListOf<Map<String, Any>>()
 
diff --git a/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/TraceTools.kt b/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/TraceTools.kt
index b480484b..8f3dc60d 100644
--- a/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/TraceTools.kt
+++ b/opendc-trace/opendc-trace-tools/src/main/kotlin/org/opendc/trace/tools/TraceTools.kt
@@ -21,6 +21,7 @@
  */
 
 @file:JvmName("TraceTools")
+
 package org.opendc.trace.tools
 
 import com.github.ajalt.clikt.core.CliktCommand
diff --git a/opendc-trace/opendc-trace-wfformat/src/main/kotlin/org/opendc/trace/wfformat/WfFormatTaskTableReader.kt b/opendc-trace/opendc-trace-wfformat/src/main/kotlin/org/opendc/trace/wfformat/WfFormatTaskTableReader.kt
index ca1a29d0..e0cbd305 100644
--- a/opendc-trace/opendc-trace-wfformat/src/main/kotlin/org/opendc/trace/wfformat/WfFormatTaskTableReader.kt
+++ b/opendc-trace/opendc-trace-wfformat/src/main/kotlin/org/opendc/trace/wfformat/WfFormatTaskTableReader.kt
@@ -25,12 +25,18 @@ package org.opendc.trace.wfformat
 import com.fasterxml.jackson.core.JsonParseException
 import com.fasterxml.jackson.core.JsonParser
 import com.fasterxml.jackson.core.JsonToken
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.conv.TASK_CHILDREN
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_REQ_NCPUS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 import org.opendc.trace.util.convertTo
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 import kotlin.math.roundToInt
 
 /**
diff --git a/opendc-trace/opendc-trace-wfformat/src/main/kotlin/org/opendc/trace/wfformat/WfFormatTraceFormat.kt b/opendc-trace/opendc-trace-wfformat/src/main/kotlin/org/opendc/trace/wfformat/WfFormatTraceFormat.kt
index 154fa061..35fb883a 100644
--- a/opendc-trace/opendc-trace-wfformat/src/main/kotlin/org/opendc/trace/wfformat/WfFormatTraceFormat.kt
+++ b/opendc-trace/opendc-trace-wfformat/src/main/kotlin/org/opendc/trace/wfformat/WfFormatTraceFormat.kt
@@ -23,8 +23,17 @@
 package org.opendc.trace.wfformat
 
 import com.fasterxml.jackson.core.JsonFactory
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumn
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.TABLE_TASKS
+import org.opendc.trace.conv.TASK_CHILDREN
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_REQ_NCPUS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 import org.opendc.trace.spi.TableDetails
 import org.opendc.trace.spi.TraceFormat
 import java.nio.file.Path
diff --git a/opendc-trace/opendc-trace-wfformat/src/test/kotlin/org/opendc/trace/wfformat/WfFormatTaskTableReaderTest.kt b/opendc-trace/opendc-trace-wfformat/src/test/kotlin/org/opendc/trace/wfformat/WfFormatTaskTableReaderTest.kt
index 9d9735b1..0560d642 100644
--- a/opendc-trace/opendc-trace-wfformat/src/test/kotlin/org/opendc/trace/wfformat/WfFormatTaskTableReaderTest.kt
+++ b/opendc-trace/opendc-trace-wfformat/src/test/kotlin/org/opendc/trace/wfformat/WfFormatTaskTableReaderTest.kt
@@ -24,7 +24,9 @@ package org.opendc.trace.wfformat
 
 import com.fasterxml.jackson.core.JsonFactory
 import com.fasterxml.jackson.core.JsonParseException
-import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertTrue
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertDoesNotThrow
 import org.junit.jupiter.api.assertThrows
diff --git a/opendc-trace/opendc-trace-wfformat/src/test/kotlin/org/opendc/trace/wfformat/WfFormatTraceFormatTest.kt b/opendc-trace/opendc-trace-wfformat/src/test/kotlin/org/opendc/trace/wfformat/WfFormatTraceFormatTest.kt
index 40506d59..75f4b413 100644
--- a/opendc-trace/opendc-trace-wfformat/src/test/kotlin/org/opendc/trace/wfformat/WfFormatTraceFormatTest.kt
+++ b/opendc-trace/opendc-trace-wfformat/src/test/kotlin/org/opendc/trace/wfformat/WfFormatTraceFormatTest.kt
@@ -22,13 +22,22 @@
 
 package org.opendc.trace.wfformat
 
-import org.junit.jupiter.api.*
-import org.junit.jupiter.api.Assertions.*
 import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertDoesNotThrow
+import org.junit.jupiter.api.assertThrows
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableReader
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.TABLE_TASKS
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 import org.opendc.trace.testkit.TableReaderTestKit
 import java.nio.file.Paths
 
@@ -49,7 +58,7 @@ class WfFormatTraceFormatTest {
     @Test
     fun testTableExists() {
         val path = Paths.get("src/test/resources/trace.json")
-        Assertions.assertDoesNotThrow { format.getDetails(path, TABLE_TASKS) }
+        assertDoesNotThrow { format.getDetails(path, TABLE_TASKS) }
     }
 
     @Test
@@ -72,7 +81,7 @@ class WfFormatTraceFormatTest {
             { assertEquals("makebwaindex_mammoth_mt_krause.fasta", reader.getString(TASK_ID)) },
             { assertEquals("eager-nextflow-chameleon", reader.getString(TASK_WORKFLOW_ID)) },
             { assertEquals(172000, reader.getDuration(TASK_RUNTIME)?.toMillis()) },
-            { assertEquals(emptySet<String>(), reader.getSet(TASK_PARENTS, String::class.java)) },
+            { assertEquals(emptySet<String>(), reader.getSet(TASK_PARENTS, String::class.java)) }
         )
 
         assertAll(
@@ -80,7 +89,7 @@ class WfFormatTraceFormatTest {
             { assertEquals("makeseqdict_mammoth_mt_krause.fasta", reader.getString(TASK_ID)) },
             { assertEquals("eager-nextflow-chameleon", reader.getString(TASK_WORKFLOW_ID)) },
             { assertEquals(175000, reader.getDuration(TASK_RUNTIME)?.toMillis()) },
-            { assertEquals(setOf("makebwaindex_mammoth_mt_krause.fasta"), reader.getSet(TASK_PARENTS, String::class.java)) },
+            { assertEquals(setOf("makebwaindex_mammoth_mt_krause.fasta"), reader.getSet(TASK_PARENTS, String::class.java)) }
         )
 
         reader.close()
diff --git a/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/WtfTaskTableReader.kt b/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/WtfTaskTableReader.kt
index 7d2005b2..73c1b8a9 100644
--- a/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/WtfTaskTableReader.kt
+++ b/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/WtfTaskTableReader.kt
@@ -22,14 +22,24 @@
 
 package org.opendc.trace.wtf
 
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.conv.TASK_CHILDREN
+import org.opendc.trace.conv.TASK_GROUP_ID
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_REQ_NCPUS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_SUBMIT_TIME
+import org.opendc.trace.conv.TASK_USER_ID
+import org.opendc.trace.conv.TASK_WAIT_TIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 import org.opendc.trace.util.convertTo
 import org.opendc.trace.util.parquet.LocalParquetReader
 import org.opendc.trace.wtf.parquet.Task
 import java.time.Duration
 import java.time.Instant
-import java.util.*
+import java.util.UUID
 
 /**
  * A [TableReader] implementation for the WTF format.
diff --git a/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/WtfTraceFormat.kt b/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/WtfTraceFormat.kt
index c8408626..bf834778 100644
--- a/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/WtfTraceFormat.kt
+++ b/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/WtfTraceFormat.kt
@@ -22,8 +22,21 @@
 
 package org.opendc.trace.wtf
 
-import org.opendc.trace.*
-import org.opendc.trace.conv.*
+import org.opendc.trace.TableColumn
+import org.opendc.trace.TableColumnType
+import org.opendc.trace.TableReader
+import org.opendc.trace.TableWriter
+import org.opendc.trace.conv.TABLE_TASKS
+import org.opendc.trace.conv.TASK_CHILDREN
+import org.opendc.trace.conv.TASK_GROUP_ID
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_REQ_NCPUS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_SUBMIT_TIME
+import org.opendc.trace.conv.TASK_USER_ID
+import org.opendc.trace.conv.TASK_WAIT_TIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 import org.opendc.trace.spi.TableDetails
 import org.opendc.trace.spi.TraceFormat
 import org.opendc.trace.util.parquet.LocalParquetReader
diff --git a/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/parquet/TaskReadSupport.kt b/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/parquet/TaskReadSupport.kt
index a6087d9f..33be38d4 100644
--- a/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/parquet/TaskReadSupport.kt
+++ b/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/parquet/TaskReadSupport.kt
@@ -26,8 +26,21 @@ import org.apache.hadoop.conf.Configuration
 import org.apache.parquet.hadoop.api.InitContext
 import org.apache.parquet.hadoop.api.ReadSupport
 import org.apache.parquet.io.api.RecordMaterializer
-import org.apache.parquet.schema.*
-import org.opendc.trace.conv.*
+import org.apache.parquet.schema.LogicalTypeAnnotation
+import org.apache.parquet.schema.MessageType
+import org.apache.parquet.schema.PrimitiveType
+import org.apache.parquet.schema.Type
+import org.apache.parquet.schema.Types
+import org.opendc.trace.conv.TASK_CHILDREN
+import org.opendc.trace.conv.TASK_GROUP_ID
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_REQ_NCPUS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_SUBMIT_TIME
+import org.opendc.trace.conv.TASK_USER_ID
+import org.opendc.trace.conv.TASK_WAIT_TIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 
 /**
  * A [ReadSupport] instance for [Task] objects.
@@ -126,7 +139,7 @@ internal class TaskReadSupport(private val projection: List<String>?) : ReadSupp
                             .named("list")
                     )
                     .`as`(LogicalTypeAnnotation.listType())
-                    .named("parents"),
+                    .named("parents")
             )
             .named("task")
     }
diff --git a/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/parquet/TaskRecordMaterializer.kt b/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/parquet/TaskRecordMaterializer.kt
index 08da5eaf..f188a3ff 100644
--- a/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/parquet/TaskRecordMaterializer.kt
+++ b/opendc-trace/opendc-trace-wtf/src/main/kotlin/org/opendc/trace/wtf/parquet/TaskRecordMaterializer.kt
@@ -22,7 +22,10 @@
 
 package org.opendc.trace.wtf.parquet
 
-import org.apache.parquet.io.api.*
+import org.apache.parquet.io.api.Converter
+import org.apache.parquet.io.api.GroupConverter
+import org.apache.parquet.io.api.PrimitiveConverter
+import org.apache.parquet.io.api.RecordMaterializer
 import org.apache.parquet.schema.MessageType
 import java.time.Duration
 import java.time.Instant
diff --git a/opendc-trace/opendc-trace-wtf/src/test/kotlin/org/opendc/trace/wtf/WtfTraceFormatTest.kt b/opendc-trace/opendc-trace-wtf/src/test/kotlin/org/opendc/trace/wtf/WtfTraceFormatTest.kt
index f6b821c2..9cd9538f 100644
--- a/opendc-trace/opendc-trace-wtf/src/test/kotlin/org/opendc/trace/wtf/WtfTraceFormatTest.kt
+++ b/opendc-trace/opendc-trace-wtf/src/test/kotlin/org/opendc/trace/wtf/WtfTraceFormatTest.kt
@@ -22,12 +22,23 @@
 
 package org.opendc.trace.wtf
 
-import org.junit.jupiter.api.*
-import org.junit.jupiter.api.Assertions.*
 import org.junit.jupiter.api.Assertions.assertAll
+import org.junit.jupiter.api.Assertions.assertDoesNotThrow
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
 import org.opendc.trace.TableColumn
 import org.opendc.trace.TableReader
-import org.opendc.trace.conv.*
+import org.opendc.trace.conv.TABLE_TASKS
+import org.opendc.trace.conv.TASK_ID
+import org.opendc.trace.conv.TASK_PARENTS
+import org.opendc.trace.conv.TASK_RUNTIME
+import org.opendc.trace.conv.TASK_SUBMIT_TIME
+import org.opendc.trace.conv.TASK_WORKFLOW_ID
 import org.opendc.trace.testkit.TableReaderTestKit
 import java.nio.file.Paths
 import java.time.Duration
@@ -78,7 +89,7 @@ class WtfTraceFormatTest {
                     setOf("584055316413447529", "133113685133695608", "1008582348422865408"),
                     reader.getSet(TASK_PARENTS, String::class.java)
                 )
-            },
+            }
         )
 
         assertAll(
@@ -92,7 +103,7 @@ class WtfTraceFormatTest {
                     setOf("584055316413447529", "133113685133695608", "1008582348422865408"),
                     reader.getSet(TASK_PARENTS, String::class.java)
                 )
-            },
+            }
         )
 
         reader.close()