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https://issues.apache.org/jira/browse/FLINK-7278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16107017#comment-16107017
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Till Rohrmann commented on FLINK-7278:
--------------------------------------
Hi [~zhenzhongxu], thanks for reporting the issue. Does the ZK migration mean
that the new ZK cluster is available under the same address as the old one?
Would it be possible to share the full logs with us? If not, then maybe you can
share them privately with me. Let me know what's possible.
> Flink job can stuck while ZK leader reelected during ZK cluster migration
> --------------------------------------------------------------------------
>
> Key: FLINK-7278
> URL: https://issues.apache.org/jira/browse/FLINK-7278
> Project: Flink
> Issue Type: Bug
> Components: Distributed Coordination
> Reporter: Zhenzhong Xu
> Priority: Minor
>
> We have observed an potential failure case while Flink job was running during
> ZK migration. Below describes the scenario.
> 1. Flink cluster running with standalone mode on Netfilx Titus container
> runtime
> 2. We performed a ZK migration by updating new OS image one node at a time.
> 3. During ZK leader reelection, Flink cluster starts to exhibit failures and
> eventually end in a non-recoverable failure mode.
> 4. This behavior does not repro every time, may be caused by an edge race
> condition.
> Below is a list of error messages ordered by event time:
> 017-07-22 02:47:44,535 INFO
> org.apache.flink.runtime.executiongraph.ExecutionGraph - Source: Source ->
> Sink: Sink (67/176) (0442d63c89809ad86f38874c845ba83f) switched from RUNNING
> to FAILED.
> java.lang.Exception: TaskManager was lost/killed: ResourceID
> {resourceId='f519795dfabcecfd7863ed587efdb398'}
> @ titus-123072-worker-3-39 (dataPort=46879)
> at
> org.apache.flink.runtime.instance.SimpleSlot.releaseSlot(SimpleSlot.java:217)
> at
> org.apache.flink.runtime.instance.SlotSharingGroupAssignment.releaseSharedSlot(SlotSharingGroupAssignment.java:533)
> at
> org.apache.flink.runtime.instance.SharedSlot.releaseSlot(SharedSlot.java:192)
> at org.apache.flink.runtime.instance.Instance.markDead(Instance.java:167)
> at
> org.apache.flink.runtime.instance.InstanceManager.unregisterAllTaskManagers(InstanceManager.java:234)
> at
> org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1.applyOrElse(JobManager.scala:330)
> at
> scala.runtime.AbstractPartialFunction.apply(AbstractPartialFunction.scala:36)
> at
> org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:44)
> at
> scala.runtime.AbstractPartialFunction.apply(AbstractPartialFunction.scala:36)
> at org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33)
> at org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28)
> at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:123)
> at
> org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28)
> at akka.actor.Actor$class.aroundReceive(Actor.scala:467)
> at
> org.apache.flink.runtime.jobmanager.JobManager.aroundReceive(JobManager.scala:118)
> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
> at akka.actor.ActorCell.invoke(ActorCell.scala:487)
> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
> at akka.dispatch.Mailbox.run(Mailbox.scala:220)
> at
> akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
> at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
> at
> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
> at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
> at
> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
> 2017-07-22 02:47:44,621 WARN com.netflix.spaas.runtime.FlinkJobManager -
> Discard message
> LeaderSessionMessage(7a247ad9-531b-4f27-877b-df41f9019431,Disconnect(0b300c04592b19750678259cd09fea95,java.lang.Exception:
> TaskManager akka://flink/user/taskmanager is disassociating)) because the
> expected leader session ID None did not equal the received leader session ID
> Some(7a247ad9-531b-4f27-877b-df41f9019431).
> Permalink Edit Delete
> zxu Zhenzhong Xu added a comment - 07/26/2017 09:24 PM
> 2017-07-22 02:47:45,015 WARN
> netflix.spaas.shaded.org.apache.zookeeper.ClientCnxn - Session
> 0x2579bebfd265054 for server 100.83.64.121/100.83.64.121:2181, unexpected
> error, closing socket connection and attempting reconnect
> java.io.IOException: Connection reset by peer
> at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
> at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
> at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
> at sun.nio.ch.IOUtil.read(IOUtil.java:192)
> at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
> at
> netflix.spaas.shaded.org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:68)
> at
> netflix.spaas.shaded.org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:366)
> at
> netflix.spaas.shaded.org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
> Permalink Edit Delete
> zxu Zhenzhong Xu added a comment - 07/26/2017 09:25 PM
> 2017-07-22 02:47:44,557 ERROR org.apache.kafka.clients.producer.KafkaProducer
> - Interrupted while joining ioThread
> java.lang.InterruptedException
> at java.lang.Object.wait(Native Method)
> at java.lang.Thread.join(Thread.java:1260)
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:703)
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:682)
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:661)
> at
> org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducerBase.close(FlinkKafkaProducerBase.java:320)
> at
> org.apache.flink.api.common.functions.util.FunctionUtils.closeFunction(FunctionUtils.java:43)
> at
> org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:127)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:431)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:332)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:666)
> at java.lang.Thread.run(Thread.java:748)
> 2017-07-22 02:47:44,663 ERROR
> org.apache.flink.streaming.runtime.tasks.StreamTask - Error during disposal
> of stream operator.
> org.apache.kafka.common.KafkaException: Failed to close kafka producer
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:732)
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:682)
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:661)
> at
> org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducerBase.close(FlinkKafkaProducerBase.java:320)
> at
> org.apache.flink.api.common.functions.util.FunctionUtils.closeFunction(FunctionUtils.java:43)
> at
> org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:127)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:431)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:332)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:666)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.InterruptedException
> at java.lang.Object.wait(Native Method)
> at java.lang.Thread.join(Thread.java:1260)
> at
> org.apache.kafka.clients.producer.KafkaProducer.close(KafkaProducer.java:703)
> ... 9 more
> 2017-07-22 02:47:45,079 WARN
> netflix.spaas.shaded.org.apache.zookeeper.ClientCnxn - Session
> 0x35841491f044692 for server null, unexpected error, closing socket
> connection and attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
> at
> netflix.spaas.shaded.org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
> at
> netflix.spaas.shaded.org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
> 2017-07-22 02:47:59,521 ERROR
> org.apache.flink.shaded.org.apache.curator.ConnectionState - Connection timed
> out for connection string
> (100.83.64.121:2181,100.83.104.81:2181,100.83.135.236:2181,100.83.146.196:2181,100.83.17.206:2181)
> and timeout (15000) / elapsed (15002)
> org.apache.flink.shaded.org.apache.curator.CuratorConnectionLossException:
> KeeperErrorCode = ConnectionLoss
> at
> org.apache.flink.shaded.org.apache.curator.ConnectionState.checkTimeouts(ConnectionState.java:197)
> at
> org.apache.flink.shaded.org.apache.curator.ConnectionState.getZooKeeper(ConnectionState.java:87)
> at
> org.apache.flink.shaded.org.apache.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:115)
> at
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:806)
> at
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:792)
> at
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:62)
> at
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl$4.call(CuratorFrameworkImpl.java:257)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:748)
> 2017-07-22 02:48:24,523 ERROR
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl
> - Background operation retry gave up
> netflix.spaas.shaded.org.apache.zookeeper.KeeperException$ConnectionLossException:
> KeeperErrorCode = ConnectionLoss
> at
> netflix.spaas.shaded.org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
> at
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl.checkBackgroundRetry(CuratorFrameworkImpl.java:708)
> at
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:826)
> at
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:792)
> at
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:62)
> at
> org.apache.flink.shaded.org.apache.curator.framework.imps.CuratorFrameworkImpl$4.call(CuratorFrameworkImpl.java:257)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:748)
> 2017-07-22 02:49:34,592 ERROR
> org.apache.flink.runtime.clusterframework.standalone.StandaloneResourceManager
> - Resource manager could not register at JobManager
> akka.pattern.AskTimeoutException: Ask timed out on
> [ActorSelection[Anchor(akka://flink/), Path(/user/jobmanager)]] after [10000
> ms]
> at akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:334)
> at akka.actor.Scheduler$$anon$7.run(Scheduler.scala:117)
> at
> scala.concurrent.Future$InternalCallbackExecutor$.unbatchedExecute(Future.scala:599)
> at scala.concurrent.BatchingExecutor$class.execute(BatchingExecutor.scala:109)
> at scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:597)
> at
> akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(Scheduler.scala:474)
> at
> akka.actor.LightArrayRevolverScheduler$$anon$8.executeBucket$1(Scheduler.scala:425)
> at
> akka.actor.LightArrayRevolverScheduler$$anon$8.nextTick(Scheduler.scala:429)
> at akka.actor.LightArrayRevolverScheduler$$anon$8.run(Scheduler.scala:381)
> at java.lang.Thread.run(Thread.java:748)
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