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[FLINK-38491][pipeline-connector][iceberg] fixed iceberg compaction parallelism #4150

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[FLINK-38491][pipeline-connector][iceberg] fixed iceberg compaction parallelism #4150

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dac9cd3
fixed iceberg compaction
fcfangcc Oct 9, 2025
f674869
mod test and comment
fcfangcc Oct 14, 2025
e085505
add test
fcfangcc Oct 14, 2025
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1 change: 1 addition & 0 deletions ...rg/src/main/java/org/apache/flink/cdc/connectors/iceberg/sink/IcebergDataSinkFactory.java
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Original file line number Diff line number Diff line change
Expand Up @@ -122,6 +122,7 @@ public Set<ConfigOption<?>> optionalOptions() {
options.add(IcebergDataSinkOptions.PARTITION_KEY);
options.add(IcebergDataSinkOptions.SINK_COMPACTION_ENABLED);
options.add(IcebergDataSinkOptions.SINK_COMPACTION_COMMIT_INTERVAL);
options.add(IcebergDataSinkOptions.SINK_COMPACTION_PARALLELISM);
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Seems we're lacking a test case to cover all supported options in IcebergDataSinkFactoryTest. Would you like to add one?

return options;
}
}
6 changes: 5 additions & 1 deletion ...or-iceberg/src/main/java/org/apache/flink/cdc/connectors/iceberg/sink/v2/IcebergSink.java
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Expand Up @@ -121,6 +121,10 @@ public SimpleVersionedSerializer<WriteResultWrapper> getWriteResultSerializer()
return new WriteResultWrapperSerializer();
}

public int partitionCustom(int bucket, int numPartitions) {
return Math.floorMod(bucket, numPartitions);
}

@Override
public void addPostCommitTopology(
DataStream<CommittableMessage<WriteResultWrapper>> committableMessageDataStream) {
Expand All @@ -136,7 +140,7 @@ public void addPostCommitTopology(
// Shuffle by different table id.
DataStream<CommittableMessage<WriteResultWrapper>> keyedStream =
committableMessageDataStream.partitionCustom(
(bucket, numPartitions) -> bucket % numPartitions,
this::partitionCustom,
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Can we just write Math::floorMod here?

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Can we just write Math::floorMod here?

This method is used to write a testcase. It has now been modified to Math::floorMod

(committableMessage) -> {
if (committableMessage instanceof CommittableWithLineage) {
WriteResultWrapper multiTableCommittable =
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8 changes: 8 additions & 0 deletions ...berg/src/test/java/org/apache/flink/cdc/connectors/iceberg/sink/v2/IcebergSinkITCase.java
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Expand Up @@ -192,4 +192,12 @@ private List<String> fetchTableContent(Catalog catalog, TableId tableId) {
}
return results;
}

@Test
public void testPartitionCustom() {
IcebergSink icebergSink =
new IcebergSink(new HashMap<>(), null, null, CompactionOptions.builder().build());
Assertions.assertThat(icebergSink.partitionCustom(-5, 4)).isEqualTo(3);
Assertions.assertThat(icebergSink.partitionCustom(5, 4)).isEqualTo(1);
}
}
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