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  1. Flink
  2. FLINK-25026

UnalignedCheckpointRescaleITCase.shouldRescaleUnalignedCheckpoint fails on AZP

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      UnalignedCheckpointRescaleITCase.shouldRescaleUnalignedCheckpoint fails on AZP with

      2021-11-23T00:58:03.8286352Z Nov 23 00:58:03 [ERROR] Tests run: 72, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 716.362 s <<< FAILURE! - in org.apache.flink.test.checkpointing.UnalignedCheckpointRescaleITCase
      2021-11-23T00:58:03.8288790Z Nov 23 00:58:03 [ERROR] shouldRescaleUnalignedCheckpoint[downscale union from 3 to 2, buffersPerChannel = 1]  Time elapsed: 4.051 s  <<< ERROR!
      2021-11-23T00:58:03.8289953Z Nov 23 00:58:03 org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
      2021-11-23T00:58:03.8291473Z Nov 23 00:58:03 	at org.apache.flink.runtime.jobmaster.JobResult.toJobExecutionResult(JobResult.java:144)
      2021-11-23T00:58:03.8292776Z Nov 23 00:58:03 	at org.apache.flink.test.checkpointing.UnalignedCheckpointTestBase.execute(UnalignedCheckpointTestBase.java:168)
      2021-11-23T00:58:03.8294520Z Nov 23 00:58:03 	at org.apache.flink.test.checkpointing.UnalignedCheckpointRescaleITCase.shouldRescaleUnalignedCheckpoint(UnalignedCheckpointRescaleITCase.java:534)
      2021-11-23T00:58:03.8295909Z Nov 23 00:58:03 	at jdk.internal.reflect.GeneratedMethodAccessor123.invoke(Unknown Source)
      2021-11-23T00:58:03.8297310Z Nov 23 00:58:03 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      2021-11-23T00:58:03.8298922Z Nov 23 00:58:03 	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
      2021-11-23T00:58:03.8300298Z Nov 23 00:58:03 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
      2021-11-23T00:58:03.8301741Z Nov 23 00:58:03 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
      2021-11-23T00:58:03.8303233Z Nov 23 00:58:03 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
      2021-11-23T00:58:03.8304514Z Nov 23 00:58:03 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
      2021-11-23T00:58:03.8305736Z Nov 23 00:58:03 	at org.junit.rules.Verifier$1.evaluate(Verifier.java:35)
      2021-11-23T00:58:03.8306856Z Nov 23 00:58:03 	at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:61)
      2021-11-23T00:58:03.8308218Z Nov 23 00:58:03 	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:54)
      2021-11-23T00:58:03.8309532Z Nov 23 00:58:03 	at org.apache.flink.util.TestNameProvider$1.evaluate(TestNameProvider.java:45)
      2021-11-23T00:58:03.8310780Z Nov 23 00:58:03 	at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:61)
      2021-11-23T00:58:03.8312026Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
      2021-11-23T00:58:03.8313515Z Nov 23 00:58:03 	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
      2021-11-23T00:58:03.8314842Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
      2021-11-23T00:58:03.8316116Z Nov 23 00:58:03 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
      2021-11-23T00:58:03.8317538Z Nov 23 00:58:03 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
      2021-11-23T00:58:03.8320044Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
      2021-11-23T00:58:03.8321044Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
      2021-11-23T00:58:03.8321978Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
      2021-11-23T00:58:03.8322915Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
      2021-11-23T00:58:03.8323848Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
      2021-11-23T00:58:03.8325330Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
      2021-11-23T00:58:03.8337747Z Nov 23 00:58:03 	at org.junit.runners.Suite.runChild(Suite.java:128)
      2021-11-23T00:58:03.8339178Z Nov 23 00:58:03 	at org.junit.runners.Suite.runChild(Suite.java:27)
      2021-11-23T00:58:03.8340038Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
      2021-11-23T00:58:03.8340967Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
      2021-11-23T00:58:03.8341889Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
      2021-11-23T00:58:03.8342923Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
      2021-11-23T00:58:03.8343842Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
      2021-11-23T00:58:03.8344979Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
      2021-11-23T00:58:03.8345869Z Nov 23 00:58:03 	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
      2021-11-23T00:58:03.8346717Z Nov 23 00:58:03 	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
      2021-11-23T00:58:03.8347642Z Nov 23 00:58:03 	at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
      2021-11-23T00:58:03.8348570Z Nov 23 00:58:03 	at org.junit.vintage.engine.execution.RunnerExecutor.execute(RunnerExecutor.java:43)
      2021-11-23T00:58:03.8349582Z Nov 23 00:58:03 	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
      2021-11-23T00:58:03.8350583Z Nov 23 00:58:03 	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
      2021-11-23T00:58:03.8351521Z Nov 23 00:58:03 	at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
      2021-11-23T00:58:03.8352509Z Nov 23 00:58:03 	at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
      2021-11-23T00:58:03.8353653Z Nov 23 00:58:03 	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
      2021-11-23T00:58:03.8354667Z Nov 23 00:58:03 	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
      2021-11-23T00:58:03.8355701Z Nov 23 00:58:03 	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
      2021-11-23T00:58:03.8356744Z Nov 23 00:58:03 	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
      2021-11-23T00:58:03.8357943Z Nov 23 00:58:03 	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
      2021-11-23T00:58:03.8358932Z Nov 23 00:58:03 	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
      2021-11-23T00:58:03.8359943Z Nov 23 00:58:03 	at org.junit.vintage.engine.VintageTestEngine.executeAllChildren(VintageTestEngine.java:82)
      2021-11-23T00:58:03.8360971Z Nov 23 00:58:03 	at org.junit.vintage.engine.VintageTestEngine.execute(VintageTestEngine.java:73)
      2021-11-23T00:58:03.8361986Z Nov 23 00:58:03 	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220)
      2021-11-23T00:58:03.8363143Z Nov 23 00:58:03 	at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:188)
      2021-11-23T00:58:03.8364237Z Nov 23 00:58:03 	at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202)
      2021-11-23T00:58:03.8365279Z Nov 23 00:58:03 	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181)
      2021-11-23T00:58:03.8366302Z Nov 23 00:58:03 	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
      2021-11-23T00:58:03.8367523Z Nov 23 00:58:03 	at org.apache.maven.surefire.junitplatform.JUnitPlatformProvider.invokeAllTests(JUnitPlatformProvider.java:150)
      2021-11-23T00:58:03.8368587Z Nov 23 00:58:03 	at org.apache.maven.surefire.junitplatform.JUnitPlatformProvider.invoke(JUnitPlatformProvider.java:120)
      2021-11-23T00:58:03.8369888Z Nov 23 00:58:03 	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
      2021-11-23T00:58:03.8370965Z Nov 23 00:58:03 	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
      2021-11-23T00:58:03.8371971Z Nov 23 00:58:03 	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
      2021-11-23T00:58:03.8373028Z Nov 23 00:58:03 	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
      2021-11-23T00:58:03.8374193Z Nov 23 00:58:03 Caused by: org.apache.flink.runtime.JobException: Recovery is suppressed by FixedDelayRestartBackoffTimeStrategy(maxNumberRestartAttempts=0, backoffTimeMS=100)
      2021-11-23T00:58:03.8375495Z Nov 23 00:58:03 	at org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.handleFailure(ExecutionFailureHandler.java:138)
      2021-11-23T00:58:03.8376816Z Nov 23 00:58:03 	at org.apache.flink.runtime.executiongraph.failover.flip1.ExecutionFailureHandler.getFailureHandlingResult(ExecutionFailureHandler.java:82)
      2021-11-23T00:58:03.8378373Z Nov 23 00:58:03 	at org.apache.flink.runtime.scheduler.DefaultScheduler.handleTaskFailure(DefaultScheduler.java:228)
      2021-11-23T00:58:03.8379481Z Nov 23 00:58:03 	at org.apache.flink.runtime.scheduler.DefaultScheduler.maybeHandleTaskFailure(DefaultScheduler.java:218)
      2021-11-23T00:58:03.8380644Z Nov 23 00:58:03 	at org.apache.flink.runtime.scheduler.DefaultScheduler.updateTaskExecutionStateInternal(DefaultScheduler.java:209)
      2021-11-23T00:58:03.8381808Z Nov 23 00:58:03 	at org.apache.flink.runtime.scheduler.SchedulerBase.updateTaskExecutionState(SchedulerBase.java:682)
      2021-11-23T00:58:03.8382989Z Nov 23 00:58:03 	at org.apache.flink.runtime.scheduler.SchedulerNG.updateTaskExecutionState(SchedulerNG.java:79)
      2021-11-23T00:58:03.8384070Z Nov 23 00:58:03 	at org.apache.flink.runtime.jobmaster.JobMaster.updateTaskExecutionState(JobMaster.java:444)
      2021-11-23T00:58:03.8385037Z Nov 23 00:58:03 	at jdk.internal.reflect.GeneratedMethodAccessor39.invoke(Unknown Source)
      2021-11-23T00:58:03.8386030Z Nov 23 00:58:03 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      2021-11-23T00:58:03.8387020Z Nov 23 00:58:03 	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
      2021-11-23T00:58:03.8388110Z Nov 23 00:58:03 	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.lambda$handleRpcInvocation$1(AkkaRpcActor.java:316)
      2021-11-23T00:58:03.8389282Z Nov 23 00:58:03 	at org.apache.flink.runtime.concurrent.akka.ClassLoadingUtils.runWithContextClassLoader(ClassLoadingUtils.java:83)
      2021-11-23T00:58:03.8390376Z Nov 23 00:58:03 	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:314)
      2021-11-23T00:58:03.8391456Z Nov 23 00:58:03 	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:217)
      2021-11-23T00:58:03.8392539Z Nov 23 00:58:03 	at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:78)
      2021-11-23T00:58:03.8393742Z Nov 23 00:58:03 	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:163)
      2021-11-23T00:58:03.8394719Z Nov 23 00:58:03 	at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:24)
      2021-11-23T00:58:03.8395626Z Nov 23 00:58:03 	at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:20)
      2021-11-23T00:58:03.8396513Z Nov 23 00:58:03 	at scala.PartialFunction.applyOrElse(PartialFunction.scala:123)
      2021-11-23T00:58:03.8397497Z Nov 23 00:58:03 	at scala.PartialFunction.applyOrElse$(PartialFunction.scala:122)
      2021-11-23T00:58:03.8398435Z Nov 23 00:58:03 	at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:20)
      2021-11-23T00:58:03.8399349Z Nov 23 00:58:03 	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171)
      2021-11-23T00:58:03.8400292Z Nov 23 00:58:03 	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172)
      2021-11-23T00:58:03.8401223Z Nov 23 00:58:03 	at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172)
      2021-11-23T00:58:03.8402260Z Nov 23 00:58:03 	at akka.actor.Actor.aroundReceive(Actor.scala:537)
      2021-11-23T00:58:03.8403157Z Nov 23 00:58:03 	at akka.actor.Actor.aroundReceive$(Actor.scala:535)
      2021-11-23T00:58:03.8404030Z Nov 23 00:58:03 	at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:220)
      2021-11-23T00:58:03.8404934Z Nov 23 00:58:03 	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:580)
      2021-11-23T00:58:03.8405775Z Nov 23 00:58:03 	at akka.actor.ActorCell.invoke(ActorCell.scala:548)
      2021-11-23T00:58:03.8406616Z Nov 23 00:58:03 	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:270)
      2021-11-23T00:58:03.8407512Z Nov 23 00:58:03 	at akka.dispatch.Mailbox.run(Mailbox.scala:231)
      2021-11-23T00:58:03.8408312Z Nov 23 00:58:03 	at akka.dispatch.Mailbox.exec(Mailbox.scala:243)
      2021-11-23T00:58:03.8409185Z Nov 23 00:58:03 	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
      2021-11-23T00:58:03.8410322Z Nov 23 00:58:03 	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
      2021-11-23T00:58:03.8411305Z Nov 23 00:58:03 	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
      2021-11-23T00:58:03.8412209Z Nov 23 00:58:03 	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
      2021-11-23T00:58:03.8413192Z Nov 23 00:58:03 	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)
      2021-11-23T00:58:03.8415356Z Nov 23 00:58:03 Caused by: org.apache.flink.runtime.io.network.netty.exception.LocalTransportException: Direct buffer memory (connection to 'localhost/127.0.0.1:35630')
      2021-11-23T00:58:03.8416790Z Nov 23 00:58:03 	at org.apache.flink.runtime.io.network.netty.CreditBasedPartitionRequestClientHandler.exceptionCaught(CreditBasedPartitionRequestClientHandler.java:177)
      2021-11-23T00:58:03.8418297Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:302)
      2021-11-23T00:58:03.8419680Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:281)
      2021-11-23T00:58:03.8421026Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:273)
      2021-11-23T00:58:03.8422366Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:143)
      2021-11-23T00:58:03.8423806Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:302)
      2021-11-23T00:58:03.8425153Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:232)
      2021-11-23T00:58:03.8426512Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:216)
      2021-11-23T00:58:03.8427954Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:209)
      2021-11-23T00:58:03.8429271Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.channelActive(DefaultChannelPipeline.java:1398)
      2021-11-23T00:58:03.8430603Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:230)
      2021-11-23T00:58:03.8431934Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:216)
      2021-11-23T00:58:03.8433297Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelActive(DefaultChannelPipeline.java:895)
      2021-11-23T00:58:03.8434775Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.fulfillConnectPromise(AbstractEpollChannel.java:658)
      2021-11-23T00:58:03.8436107Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.finishConnect(AbstractEpollChannel.java:691)
      2021-11-23T00:58:03.8437442Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.epollOutReady(AbstractEpollChannel.java:567)
      2021-11-23T00:58:03.8438654Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:470)
      2021-11-23T00:58:03.8439768Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
      2021-11-23T00:58:03.8440960Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
      2021-11-23T00:58:03.8442282Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
      2021-11-23T00:58:03.8443317Z Nov 23 00:58:03 	at java.base/java.lang.Thread.run(Thread.java:829)
      2021-11-23T00:58:03.8448100Z Nov 23 00:58:03 Caused by: java.lang.OutOfMemoryError: Direct buffer memory. The direct out-of-memory error has occurred. This can mean two things: either job(s) require(s) a larger size of JVM direct memory or there is a direct memory leak. The direct memory can be allocated by user code or some of its dependencies. In this case 'taskmanager.memory.task.off-heap.size' configuration option should be increased. Flink framework and its dependencies also consume the direct memory, mostly for network communication. The most of network memory is managed by Flink and should not result in out-of-memory error. In certain special cases, in particular for jobs with high parallelism, the framework may require more direct memory which is not managed by Flink. In this case 'taskmanager.memory.framework.off-heap.size' configuration option should be increased. If the error persists then there is probably a direct memory leak in user code or some of its dependencies which has to be investigated and fixed. The task executor has to be shutdown...
      2021-11-23T00:58:03.8451299Z Nov 23 00:58:03 	at java.base/java.nio.Bits.reserveMemory(Bits.java:175)
      2021-11-23T00:58:03.8452187Z Nov 23 00:58:03 	at java.base/java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:118)
      2021-11-23T00:58:03.8453176Z Nov 23 00:58:03 	at java.base/java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:317)
      2021-11-23T00:58:03.8454212Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.buffer.PoolArena$DirectArena.allocateDirect(PoolArena.java:632)
      2021-11-23T00:58:03.8455342Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.buffer.PoolArena$DirectArena.newChunk(PoolArena.java:607)
      2021-11-23T00:58:03.8456445Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.buffer.PoolArena.allocateNormal(PoolArena.java:202)
      2021-11-23T00:58:03.8457611Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.buffer.PoolArena.tcacheAllocateSmall(PoolArena.java:172)
      2021-11-23T00:58:03.8458688Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.buffer.PoolArena.allocate(PoolArena.java:134)
      2021-11-23T00:58:03.8459728Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.buffer.PoolArena.allocate(PoolArena.java:126)
      2021-11-23T00:58:03.8460782Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:395)
      2021-11-23T00:58:03.8462013Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:187)
      2021-11-23T00:58:03.8463326Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:178)
      2021-11-23T00:58:03.8464695Z Nov 23 00:58:03 	at org.apache.flink.runtime.io.network.netty.BufferResponseDecoder.onChannelActive(BufferResponseDecoder.java:54)
      2021-11-23T00:58:03.8465948Z Nov 23 00:58:03 	at org.apache.flink.runtime.io.network.netty.NettyMessageClientDecoderDelegate.channelActive(NettyMessageClientDecoderDelegate.java:74)
      2021-11-23T00:58:03.8467368Z Nov 23 00:58:03 	at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:230)
      2021-11-23T00:58:03.8468324Z Nov 23 00:58:03 	... 14 more
      

      https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=26873&view=logs&j=b0a398c0-685b-599c-eb57-c8c2a771138e&t=747432ad-a576-5911-1e2a-68c6bedc248a&l=10771

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              trohrmann Till Rohrmann
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