I think the root cause might be the firewall between your local machine and
YARN cluster.
It seems that your local machine is only allowed to access some specific
ports from the YARN cluster(e.g. Yarn ResourceManager port).
You could verify that by telnet the running JobManager address(
10.0.11.57:46637) from your local machine. The connection will be refused.
Best,
Yang
Vijayendra Yadav <contact....@gmail.com> 于2021年4月24日周六 上午8:05写道：
> Hi Team,
>
> While restarting Flink application from CHECKPOINT, facing the following
> Error(intermittently), but it does not impact Job getting submitted or
> functionality. But still wondering what could be the reason and solution ?
>
> *RUN Command:*
>
> /usr/lib/flink/bin/flink run
> \
> -s
> *s3://bucket-app/flink/checkpoint/app/0c9be9b65962e068b6b138ed81f7ae14/chk-13229/*
> \
> -c com.comp.App \
> -m yarn-cluster
> \
> -yjm 4096m
> \
> -ytm 6144m
> \
> -ynm flink-app \
> -yt ${app_install_path}/conf
> \
> ${app_install_path}/*.jar
> \
> --conffile ${app_install_path}/application.properties
> \
> --app App
>
>
> *ERROR Messages:*
>
> *Job has been submitted with JobID e510e34928101ed53cb08df6d3d29f69*
> 13:00:35.488 [main] ERROR org.apache.flink.client.cli.CliFrontend - Error
> while running the command.
> org.apache.flink.client.program.ProgramInvocationException: The main
> method caused an error:
> org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not
> complete the operation. Number of retries has been exhausted.
> at
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:302)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:198)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:149)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:699)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:232)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:916)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:992)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at java.security.AccessController.doPrivileged(Native Method)
> ~[?:1.8.0_265]
> at javax.security.auth.Subject.doAs(Subject.java:422) [?:1.8.0_265]
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1893)
> [hadoop-common-2.10.0-amzn-0.jar:?]
> at
> org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
> [flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:992)
> [flink-dist_2.11-1.11.0.jar:1.11.0]
> Caused by: java.util.concurrent.ExecutionException:
> org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not
> complete the operation. Number of retries has been exhausted.
> at
> java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
> ~[?:1.8.0_265]
> at
> java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1908)
> ~[?:1.8.0_265]
> at
> org.apache.flink.client.program.StreamContextEnvironment.getJobExecutionResult(StreamContextEnvironment.java:116)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.client.program.StreamContextEnvironment.execute(StreamContextEnvironment.java:80)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1699)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> com.directv.dis.DisFlinkService.execute(DisFlinkService.java:73) ~[?:?]
> at
> com.directv.dis.DisFlinkEmrApplication.main(DisFlinkEmrApplication.java:38)
> ~[?:?]
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> ~[?:1.8.0_265]
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> ~[?:1.8.0_265]
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> ~[?:1.8.0_265]
> at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_265]
> at
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:288)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> ... 11 more
> Caused by: org.apache.flink.runtime.concurrent.FutureUtils$RetryException:
> Could not complete the operation. Number of retries has been exhausted.
> at
> org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$8(FutureUtils.java:302)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774)
> ~[?:1.8.0_265]
> at
> java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750)
> ~[?:1.8.0_265]
> at
> java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
> ~[?:1.8.0_265]
> at
> java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
> ~[?:1.8.0_265]
> at
> org.apache.flink.runtime.rest.RestClient.lambda$submitRequest$1(RestClient.java:342)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:500)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:493)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:472)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:413)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:538)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:531)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:111)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:323)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:339)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:685)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:632)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:549)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:511)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:918)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_265]
> Caused by: java.util.concurrent.CompletionException:
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection refused: ip-10-0-11-57.us-west-2.compute.internal/
> 10.0.11.57:46637
> at
> java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
> ~[?:1.8.0_265]
> at
> java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
> ~[?:1.8.0_265]
> at
> java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:957)
> ~[?:1.8.0_265]
> at
> java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:940)
> ~[?:1.8.0_265]
> at
> java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
> ~[?:1.8.0_265]
> at
> java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
> ~[?:1.8.0_265]
> at
> org.apache.flink.runtime.rest.RestClient.lambda$submitRequest$1(RestClient.java:342)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:500)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:493)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:472)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:413)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:538)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:531)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:111)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:323)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:339)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:685)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:632)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:549)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:511)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:918)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_265]
> Caused by:
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection refused: ip-10-0-11-57.us-west-2.compute.internal/
> 10.0.11.57:46637
> Caused by: java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> ~[?:1.8.0_265]
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:714)
> ~[?:1.8.0_265]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:336)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:685)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:632)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:549)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:511)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:918)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> ~[flink-dist_2.11-1.11.0.jar:1.11.0]
> at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_265]
>
> ------------------------------------------------------------
> The program finished with the following exception:
>
> org.apache.flink.client.program.ProgramInvocationException: The main
> method caused an error:
> org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not
> complete the operation. Number of retries has been exhausted.
> at
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:302)
> at
> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:198)
> at
> org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:149)
> at
> org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:699)
> at
> org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:232)
> at
> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:916)
> at
> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:992)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1893)
> at
> org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
> at
> org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:992)
> Caused by: java.util.concurrent.ExecutionException:
> org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not
> complete the operation. Number of retries has been exhausted.
> at
> java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
> at
> java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1908)
> at
> org.apache.flink.client.program.StreamContextEnvironment.getJobExecutionResult(StreamContextEnvironment.java:116)
> at
> org.apache.flink.client.program.StreamContextEnvironment.execute(StreamContextEnvironment.java:80)
> at
> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1699)
> at com.directv.dis.DisFlinkService.execute(DisFlinkService.java:73)
> at
> com.directv.dis.DisFlinkEmrApplication.main(DisFlinkEmrApplication.java:38)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:288)
> ... 11 more
> Caused by: org.apache.flink.runtime.concurrent.FutureUtils$RetryException:
> Could not complete the operation. Number of retries has been exhausted.
> at
> org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$8(FutureUtils.java:302)
> at
> java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774)
> at
> java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750)
> at
> java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
> at
> java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990)
> at
> org.apache.flink.runtime.rest.RestClient.lambda$submitRequest$1(RestClient.java:342)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:500)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:493)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:472)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:413)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:538)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:531)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:111)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:323)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:339)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:685)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:632)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:549)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:511)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:918)
> at
> org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.util.concurrent.CompletionException:
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection refused: ip-10-0-11-57.us-west-2.compute.internal/
> 10.0.11.57:46637
> at
> java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)
> at
> java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)
> at
> java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:957)
> at
> java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:940)
> ... 19 more
> Caused by:
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AnnotatedConnectException:
> Connection refused: ip-10-0-11-57.us-west-2.compute.internal/
> 10.0.11.57:46637
> Caused by: java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:714)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:336)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:685)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:632)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:549)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:511)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:918)
> at
> org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at java.lang.Thread.run(Thread.java:748)
>
