[
https://issues.apache.org/jira/browse/FLINK-12510?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Piotr Nowojski closed FLINK-12510.
----------------------------------
Resolution: Fixed
Fix Version/s: 1.9.0
merged commit eb8fff8 into apache:master
> Deadlock when reading from InputGates
> -------------------------------------
>
> Key: FLINK-12510
> URL: https://issues.apache.org/jira/browse/FLINK-12510
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Network
> Affects Versions: 1.9.0
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.9.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> One refactor in https://issues.apache.org/jira/browse/FLINK-12434 caused a
> potential deadlock as visible here (from UnionStaticDynamicIterationITCase):
>
> {noformat}
> "CHAIN Union -> Pipe (4/4)":
> at
> org.apache.flink.runtime.io.network.partition.ResultPartitionManager.createSubpartitionView(ResultPartitionManager.java:63)
> - waiting to lock <0x00000000818edc90> (a java.util.HashMap)
> at
> org.apache.flink.runtime.io.network.partition.consumer.LocalInputChannel.requestSubpartition(LocalInputChannel.java:111)
> - locked <0x00000000890001d8> (a java.lang.Object)
> at
> org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.requestPartitions(SingleInputGate.java:500)
> - locked <0x00000000890001e8> (a java.lang.Object)
> at
> org.apache.flink.runtime.io.network.partition.consumer.UnionInputGate.requestPartitions(UnionInputGate.java:160)
> at
> org.apache.flink.runtime.io.network.partition.consumer.UnionInputGate.getNextBufferOrEvent(UnionInputGate.java:183)
> at
> org.apache.flink.runtime.io.network.partition.consumer.UnionInputGate.getNextBufferOrEvent(UnionInputGate.java:169)
> at
> org.apache.flink.runtime.io.network.api.reader.AbstractRecordReader.getNextRecord(AbstractRecordReader.java:86)
> at
> org.apache.flink.runtime.io.network.api.reader.MutableRecordReader.next(MutableRecordReader.java:47)
> at
> org.apache.flink.runtime.operators.util.ReaderIterator.next(ReaderIterator.java:59)
> at
> org.apache.flink.runtime.operators.UnionWithTempOperator.run(UnionWithTempOperator.java:71)
> at org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:504)
> at
> org.apache.flink.runtime.iterative.task.AbstractIterativeTask.run(AbstractIterativeTask.java:157)
> at
> org.apache.flink.runtime.iterative.task.IterationTailTask.run(IterationTailTask.java:122)
> at
> org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:369)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:689)
> at java.lang.Thread.run(Thread.java:748)
> "flink-akka.actor.default-dispatcher-4":
> at
> org.apache.flink.runtime.io.network.partition.consumer.UnionInputGate.queueInputGate(UnionInputGate.java:296)
> - waiting to lock <0x00000000890019a8> (a java.util.LinkedHashSet)
> at
> org.apache.flink.runtime.io.network.partition.consumer.UnionInputGate.lambda$new$0(UnionInputGate.java:119)
> at
> org.apache.flink.runtime.io.network.partition.consumer.UnionInputGate$$Lambda$224/305821273.run(Unknown
> Source)
> at
> java.util.concurrent.CompletableFuture.uniRun(CompletableFuture.java:705)
> at
> java.util.concurrent.CompletableFuture$UniRun.tryFire(CompletableFuture.java:687)
> at
> java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
> at
> java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
> at
> org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.queueChannel(SingleInputGate.java:672)
> at
> org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.notifyChannelNonEmpty(SingleInputGate.java:643)
> at
> org.apache.flink.runtime.io.network.partition.consumer.InputChannel.notifyChannelNonEmpty(InputChannel.java:125)
> at
> org.apache.flink.runtime.io.network.partition.consumer.LocalInputChannel.notifyDataAvailable(LocalInputChannel.java:203)
> at
> org.apache.flink.runtime.io.network.partition.BoundedBlockingSubpartition.createReadView(BoundedBlockingSubpartition.java:216)
> - locked <0x0000000084c068a8> (a java.lang.Object)
> at
> org.apache.flink.runtime.io.network.partition.ResultPartition.createSubpartitionView(ResultPartition.java:350)
> at
> org.apache.flink.runtime.io.network.partition.ResultPartitionManager.createSubpartitionView(ResultPartitionManager.java:71)
> - locked <0x00000000818edc90> (a java.util.HashMap)
> at
> org.apache.flink.runtime.io.network.partition.consumer.LocalInputChannel.requestSubpartition(LocalInputChannel.java:111)
> - locked <0x0000000089001fa8> (a java.lang.Object)
> at
> org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.updateInputChannel(SingleInputGate.java:382)
> - locked <0x0000000084c06948> (a java.lang.Object)
> at
> org.apache.flink.runtime.taskexecutor.TaskExecutor.lambda$updatePartitions$1(TaskExecutor.java:626)
> at
> org.apache.flink.runtime.taskexecutor.TaskExecutor$$Lambda$222/1536847067.run(Unknown
> Source)
> at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
> at
> akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(ForkJoinExecutorConfigurator.scala:44)
> at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
> at
> akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
> at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
> at
> akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
> "CHAIN Union -> Pipe (3/4)":
> at
> org.apache.flink.runtime.io.network.partition.ResultPartitionManager.onConsumedPartition(ResultPartitionManager.java:114)
> - waiting to lock <0x00000000818edc90> (a java.util.HashMap)
> at
> org.apache.flink.runtime.io.network.partition.ResultPartition.onConsumedSubpartition(ResultPartition.java:438)
> at
> org.apache.flink.runtime.io.network.partition.ResultSubpartition.onConsumedSubpartition(ResultSubpartition.java:58)
> at
> org.apache.flink.runtime.io.network.partition.BoundedBlockingSubpartitionReader.notifySubpartitionConsumed(BoundedBlockingSubpartitionReader.java:99)
> at
> org.apache.flink.runtime.io.network.partition.consumer.LocalInputChannel.notifySubpartitionConsumed(LocalInputChannel.java:243)
> at
> org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.transformToBufferOrEvent(SingleInputGate.java:617)
> at
> org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.getNextBufferOrEvent(SingleInputGate.java:538)
> at
> org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.pollNextBufferOrEvent(SingleInputGate.java:519)
> at
> org.apache.flink.runtime.io.network.partition.consumer.UnionInputGate.waitAndGetNextData(UnionInputGate.java:217)
> - locked <0x00000000890019a8> (a java.util.LinkedHashSet)
> at
> org.apache.flink.runtime.io.network.partition.consumer.UnionInputGate.getNextBufferOrEvent(UnionInputGate.java:185)
> at
> org.apache.flink.runtime.io.network.partition.consumer.UnionInputGate.getNextBufferOrEvent(UnionInputGate.java:169)
> at
> org.apache.flink.runtime.io.network.api.reader.AbstractRecordReader.getNextRecord(AbstractRecordReader.java:86)
> at
> org.apache.flink.runtime.io.network.api.reader.MutableRecordReader.next(MutableRecordReader.java:47)
> at
> org.apache.flink.runtime.operators.util.ReaderIterator.next(ReaderIterator.java:59)
> at
> org.apache.flink.runtime.operators.resettable.SpillingResettableMutableObjectIterator.next(SpillingResettableMutableObjectIterator.java:149)
> at
> org.apache.flink.runtime.operators.UnionWithTempOperator.run(UnionWithTempOperator.java:77)
> at org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:504)
> at
> org.apache.flink.runtime.iterative.task.AbstractIterativeTask.run(AbstractIterativeTask.java:157)
> at
> org.apache.flink.runtime.iterative.task.IterationTailTask.run(IterationTailTask.java:122)
> at
> org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:369)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:689)
> at java.lang.Thread.run(Thread.java:748)
> Found 1 deadlock.{noformat}
> https://api.travis-ci.org/v3/job/531956581/log.txt
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