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Rui Fan commented on FLINK-31036: --------------------------------- I see that StateCheckpointedITCase fails when this commit[1] is merged. I have an idea: Based on this commit, use a script to run StateCheckpointedITCase(with LOG enabled) repeatedly to see if it can be reproduced. I'll update here when I come to any conclusions. [1]https://github.com/flink-ci/flink-mirror/commit/331abad6dd2d6ec79ecde7116f3b48f2a249b9ef > StateCheckpointedITCase timed out due to deadlock > ------------------------------------------------- > > Key: FLINK-31036 > URL: https://issues.apache.org/jira/browse/FLINK-31036 > Project: Flink > Issue Type: Bug > Components: Runtime / Checkpointing > Affects Versions: 1.17.0 > Reporter: Matthias Pohl > Assignee: Rui Fan > Priority: Blocker > Labels: test-stability > > https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=46023&view=logs&j=39d5b1d5-3b41-54dc-6458-1e2ddd1cdcf3&t=0c010d0c-3dec-5bf1-d408-7b18988b1b2b&l=10608 > {code} > "Legacy Source Thread - Source: Custom Source -> Filter (6/12)#69980" > #13718026 prio=5 os_prio=0 tid=0x00007f05f44f0800 nid=0x128157 waiting on > condition [0x00007f059feef000] > java.lang.Thread.State: WAITING (parking) > at sun.misc.Unsafe.park(Native Method) > - parking to wait for <0x00000000f0a974e8> (a > java.util.concurrent.CompletableFuture$Signaller) > at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175) > at > java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1707) > at > java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323) > at > java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1742) > at > java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1908) > at > org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestMemorySegmentBlocking(LocalBufferPool.java:384) > at > org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestBufferBuilderBlocking(LocalBufferPool.java:356) > at > org.apache.flink.runtime.io.network.partition.BufferWritingResultPartition.requestNewBufferBuilderFromPool(BufferWritingResultPartition.java:414) > at > org.apache.flink.runtime.io.network.partition.BufferWritingResultPartition.requestNewUnicastBufferBuilder(BufferWritingResultPartition.java:390) > at > org.apache.flink.runtime.io.network.partition.BufferWritingResultPartition.appendUnicastDataForRecordContinuation(BufferWritingResultPartition.java:328) > at > org.apache.flink.runtime.io.network.partition.BufferWritingResultPartition.emitRecord(BufferWritingResultPartition.java:161) > at > org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:107) > at > org.apache.flink.runtime.io.network.api.writer.ChannelSelectorRecordWriter.emit(ChannelSelectorRecordWriter.java:55) > at > org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:105) > at > org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:91) > at > org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:45) > at > org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:59) > at > org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:31) > at > org.apache.flink.streaming.api.operators.StreamFilter.processElement(StreamFilter.java:39) > at > org.apache.flink.streaming.runtime.io.RecordProcessorUtils$$Lambda$1311/1256184070.accept(Unknown > Source) > at > org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.pushToOperator(CopyingChainingOutput.java:75) > at > org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:50) > at > org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:29) > at > org.apache.flink.streaming.api.operators.StreamSourceContexts$ManualWatermarkContext.processAndCollect(StreamSourceContexts.java:418) > at > org.apache.flink.streaming.api.operators.StreamSourceContexts$WatermarkContext.collect(StreamSourceContexts.java:513) > - locked <0x00000000d55035c0> (a java.lang.Object) > at > org.apache.flink.streaming.api.operators.StreamSourceContexts$SwitchingOnClose.collect(StreamSourceContexts.java:103) > at > org.apache.flink.test.checkpointing.StateCheckpointedITCase$StringGeneratingSourceFunction.run(StateCheckpointedITCase.java:178) > - locked <0x00000000d55035c0> (a java.lang.Object) > at > org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:110) > at > org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:67) > at > org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:333) > {code} -- This message was sent by Atlassian Jira (v8.20.10#820010)