[GitHub] [beam] damccorm opened a new issue, #20269: Flink postcommits failing testFlattenWithDifferentInputAndOutputCoders2

[GitBox <gi...@apache.org>]

damccorm opened a new issue, #20269:
URL: https://github.com/apache/beam/issues/20269

   Both beam_PostCommit_Java_PVR_Flink_Batch and beam_PostCommit_Java_PVR_Flink_Streaming are failing newly added test org.apache.beam.sdk.transforms.FlattenTest.testFlattenWithDifferentInputAndOutputCoders2.
   
   SEVERE: Error in task code:  CHAIN MapPartition (MapPartition at [6]{Values, FlatMapElements, PAssert$0}) -\> FlatMap (FlatMap at ExtractOutput[0]) -\> Map (Key Extractor) -\> GroupCombine (GroupCombine at GroupCombine: PAssert$0/GroupGlobally/GatherAllOutputs/GroupByKey) -\> Map (Key Extractor) (2/2) java.lang.ClassCastException: org.apache.beam.sdk.values.KV cannot be cast to [B
   	at org.apache.beam.sdk.coders.ByteArrayCoder.encode(ByteArrayCoder.java:41)
   	at org.apache.beam.sdk.coders.LengthPrefixCoder.encode(LengthPrefixCoder.java:56)
   	at org.apache.beam.sdk.coders.Coder.encode(Coder.java:136)
   	at org.apache.beam.sdk.util.WindowedValue$FullWindowedValueCoder.encode(WindowedValue.java:590)
   	at org.apache.beam.sdk.util.WindowedValue$FullWindowedValueCoder.encode(WindowedValue.java:581)
   	at org.apache.beam.sdk.util.WindowedValue$FullWindowedValueCoder.encode(WindowedValue.java:541)
   	at org.apache.beam.sdk.fn.data.BeamFnDataSizeBasedBufferingOutboundObserver.accept(BeamFnDataSizeBasedBufferingOutboundObserver.java:109)
   	at org.apache.beam.runners.fnexecution.control.SdkHarnessClient$CountingFnDataReceiver.accept(SdkHarnessClient.java:667)
   	at org.apache.beam.runners.flink.translation.functions.FlinkExecutableStageFunction.processElements(FlinkExecutableStageFunction.java:271)
   	at org.apache.beam.runners.flink.translation.functions.FlinkExecutableStageFunction.mapPartition(FlinkExecutableStageFunction.java:203)
   	at org.apache.flink.runtime.operators.MapPartitionDriver.run(MapPartitionDriver.java:103)
   	at org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:504)
   	at org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:369)
   	at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:705)
   	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:530)
   	at java.lang.Thread.run(Thread.java:748)
   
   
   Imported from Jira [BEAM-10016](https://issues.apache.org/jira/browse/BEAM-10016). Original Jira may contain additional context.
   Reported by: ibzib.
   This issue has child subcomponents which were not migrated over. See the original Jira for more information.


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