[FLINK-8902] Re-scaling job sporadically fails with KeeperException

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Not A Problem
• Affects Version/s: 1.5.0, 1.6.0
• Component/s: Runtime / Coordination
• Labels: flip6

Environment

Commit: 80020cb

Hadoop: 2.8.3

YARN

 

• Assignee: Andrey Zagrebin
• Reporter: Gary Yao
• Created: 08/Mar/18 17:28
• Updated: 24/Feb/20 15:51
• Resolved: 24/Feb/20 15:51

Description

Description
Re-scaling a job with bin/flink modify -p <new_parallelism> sporadically fails with a KeeperException

Steps to reproduce

1. Submit job to Flink cluster with flip6 enabled running on YARN (session mode).
2. Re-scale job (5-20 times)

Stacktrace (client)

org.apache.flink.util.FlinkException: Could not rescale job 61e2e99db2e959ebd94e40f9c5e816bc.
	at org.apache.flink.client.cli.CliFrontend.lambda$modify$8(CliFrontend.java:766)
	at org.apache.flink.client.cli.CliFrontend.runClusterAction(CliFrontend.java:954)
	at org.apache.flink.client.cli.CliFrontend.modify(CliFrontend.java:757)
	at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1037)
	at org.apache.flink.client.cli.CliFrontend.lambda$main$9(CliFrontend.java:1095)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
	at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
	at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1095)
Caused by: java.util.concurrent.CompletionException: org.apache.flink.runtime.jobmaster.exceptions.JobModificationException: Could not restore from temporary rescaling savepoint. This might indicate that the savepoint hdfs://172.31.33.72:9000/flinkha/savepoints/savepoint-61e2e9-fdb3d05a0035 got corrupted. Deleting this savepoint as a precaution.
	at org.apache.flink.runtime.jobmaster.JobMaster.lambda$rescaleOperators$3(JobMaster.java:525)
	at java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:822)
	at java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:797)
	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRunAsync(AkkaRpcActor.java:295)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:150)
	at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleMessage(FencedAkkaRpcActor.java:66)
	at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.lambda$onReceive$1(AkkaRpcActor.java:132)
	at akka.actor.ActorCell$$anonfun$become$1.applyOrElse(ActorCell.scala:544)
	at akka.actor.Actor$class.aroundReceive(Actor.scala:502)
	at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:95)
	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
	at akka.actor.ActorCell.invoke(ActorCell.scala:495)
	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
	at akka.dispatch.Mailbox.run(Mailbox.scala:224)
	at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
	at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
	at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
	at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
	at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: org.apache.flink.runtime.jobmaster.exceptions.JobModificationException: Could not restore from temporary rescaling savepoint. This might indicate that the savepoint hdfs://172.31.33.72:9000/flinkha/savepoints/savepoint-61e2e9-fdb3d05a0035 got corrupted. Deleting this savepoint as a precaution.
	at org.apache.flink.runtime.jobmaster.JobMaster.lambda$restoreExecutionGraphFromRescalingSavepoint$17(JobMaster.java:1317)
	at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:602)
	at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577)
	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.ConcurrentModificationException: ZooKeeper unexpectedly modified
	at org.apache.flink.runtime.zookeeper.ZooKeeperStateHandleStore.addAndLock(ZooKeeperStateHandleStore.java:168)
	at org.apache.flink.runtime.checkpoint.ZooKeeperCompletedCheckpointStore.addCheckpoint(ZooKeeperCompletedCheckpointStore.java:233)
	at org.apache.flink.runtime.checkpoint.CheckpointCoordinator.restoreSavepoint(CheckpointCoordinator.java:1088)
	at org.apache.flink.runtime.jobmaster.JobMaster.tryRestoreExecutionGraphFromSavepoint(JobMaster.java:1161)
	at org.apache.flink.runtime.jobmaster.JobMaster.lambda$restoreExecutionGraphFromRescalingSavepoint$17(JobMaster.java:1297)
	... 10 more
Caused by: org.apache.flink.shaded.zookeeper.org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists
	at org.apache.flink.shaded.zookeeper.org.apache.zookeeper.KeeperException.create(KeeperException.java:119)
	at org.apache.flink.shaded.zookeeper.org.apache.zookeeper.ZooKeeper.multiInternal(ZooKeeper.java:1006)
	at org.apache.flink.shaded.zookeeper.org.apache.zookeeper.ZooKeeper.multi(ZooKeeper.java:910)
	at org.apache.flink.shaded.curator.org.apache.curator.framework.imps.CuratorTransactionImpl.doOperation(CuratorTransactionImpl.java:159)
	at org.apache.flink.shaded.curator.org.apache.curator.framework.imps.CuratorTransactionImpl.access$200(CuratorTransactionImpl.java:44)
	at org.apache.flink.shaded.curator.org.apache.curator.framework.imps.CuratorTransactionImpl$2.call(CuratorTransactionImpl.java:129)
	at org.apache.flink.shaded.curator.org.apache.curator.framework.imps.CuratorTransactionImpl$2.call(CuratorTransactionImpl.java:125)
	at org.apache.flink.shaded.curator.org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:109)
	at org.apache.flink.shaded.curator.org.apache.curator.framework.imps.CuratorTransactionImpl.commit(CuratorTransactionImpl.java:122)
	at org.apache.flink.runtime.zookeeper.ZooKeeperStateHandleStore.addAndLock(ZooKeeperStateHandleStore.java:162)
	... 14 more

Issue Links

• is duplicated by: FLINK-11997 ConcurrentModificationException: ZooKeeper unexpectedly modified