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ASF GitHub Bot commented on FLINK-8887: --------------------------------------- zentol closed pull request #5648: [FLINK-8887][flip-6] ClusterClient.getJobStatus can throw FencingTokenException URL: https://github.com/apache/flink/pull/5648 This is a PR merged from a forked repository. As GitHub hides the original diff on merge, it is displayed below for the sake of provenance: As this is a foreign pull request (from a fork), the diff is supplied below (as it won't show otherwise due to GitHub magic): diff --git a/flink-runtime/src/main/java/org/apache/flink/runtime/dispatcher/Dispatcher.java b/flink-runtime/src/main/java/org/apache/flink/runtime/dispatcher/Dispatcher.java index 9b2411c66b7..1789758a6f1 100644 --- a/flink-runtime/src/main/java/org/apache/flink/runtime/dispatcher/Dispatcher.java +++ b/flink-runtime/src/main/java/org/apache/flink/runtime/dispatcher/Dispatcher.java @@ -57,6 +57,7 @@ import org.apache.flink.runtime.rpc.FencedRpcEndpoint; import org.apache.flink.runtime.rpc.RpcService; import org.apache.flink.runtime.rpc.RpcUtils; +import org.apache.flink.runtime.rpc.exceptions.FencingTokenException; import org.apache.flink.util.ExceptionUtils; import org.apache.flink.util.FlinkException; import org.apache.flink.util.Preconditions; @@ -74,6 +75,7 @@ import java.util.Map; import java.util.UUID; import java.util.concurrent.CompletableFuture; +import java.util.concurrent.CompletionException; import java.util.stream.Collectors; /** @@ -404,7 +406,29 @@ public void start() throws Exception { final JobManagerRunner jobManagerRunner = jobManagerRunners.get(jobId); if (jobManagerRunner != null) { - return jobManagerRunner.getJobManagerGateway().requestJobStatus(timeout); + CompletableFuture<JobStatus> statusFuture = jobManagerRunner.getJobManagerGateway().requestJobStatus(timeout); + statusFuture.handle((JobStatus status, Throwable throwable) -> { + if (throwable != null) { + Throwable error = ExceptionUtils.stripCompletionException(throwable); + + if (error instanceof FencingTokenException) { + log.warn("It occurs FencingTokenException may be the job manager runner has no leadership or" + + " the job has finished, so we would try to get it from archived execution graph store."); + final JobDetails jobDetails = archivedExecutionGraphStore.getAvailableJobDetails(jobId); + + if (jobDetails != null) { + return jobDetails.getStatus(); + } else { + throw new CompletionException(new FlinkJobNotFoundException(jobId)); + } + } + + } + + return status; + }); + + return statusFuture; } else { final JobDetails jobDetails = archivedExecutionGraphStore.getAvailableJobDetails(jobId); ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org > ClusterClient.getJobStatus can throw FencingTokenException > ---------------------------------------------------------- > > Key: FLINK-8887 > URL: https://issues.apache.org/jira/browse/FLINK-8887 > Project: Flink > Issue Type: Bug > Components: Distributed Coordination > Affects Versions: 1.5.0 > Reporter: Gary Yao > Assignee: Till Rohrmann > Priority: Blocker > Labels: flip-6, pull-request-available > Fix For: 1.5.0 > > > *Description* > Calling {{RestClusterClient.getJobStatus}} or > {{MiniClusterClient.getJobStatus}} can result in a {{FencingTokenException}}. > *Analysis* > {{Dispatcher.requestJobStatus}} first looks the {{JobManagerRunner}} up by > job id. If a reference is found, {{requestJobStatus}} is called on the > respective instance. If not, the {{ArchivedExecutionGraphStore}} is queried. > However, between the lookup and the method call, the {{JobMaster}} of the > respective job may have lost leadership already (job finished), and has set > the fencing token to {{null}}. > *Stacktrace* > {noformat} > Caused by: org.apache.flink.runtime.rpc.exceptions.FencingTokenException: > Fencing token mismatch: Ignoring message LocalFencedMessage(null, > LocalRpcInvocation(requestJobStatus(Time))) because the fencing token null > did not match the expected fencing token b8423c75bc6838244b8c93c8bd4a4f51. > at > org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleMessage(FencedAkkaRpcActor.java:73) > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.lambda$onReceive$1(AkkaRpcActor.java:132) > at > akka.actor.ActorCell$$anonfun$become$1.applyOrElse(ActorCell.scala:544) > at akka.actor.Actor$class.aroundReceive(Actor.scala:502) > at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:95) > at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526) > at akka.actor.ActorCell.invoke(ActorCell.scala:495) > at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257) > at akka.dispatch.Mailbox.run(Mailbox.scala:224) > at akka.dispatch.Mailbox.exec(Mailbox.scala:234) > at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) > at > scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) > at > scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) > at > scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) > {noformat} > {noformat} > Caused by: org.apache.flink.runtime.rpc.exceptions.FencingTokenException: > Fencing token not set: Ignoring message LocalFencedMessage(null, > LocalRpcInvocation(requestJobStatus(Time))) because the fencing token is null. > at > org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleMessage(FencedAkkaRpcActor.java:56) > at > org.apache.flink.runtime.rpc.akka.AkkaRpcActor.lambda$onReceive$1(AkkaRpcActor.java:132) > at > akka.actor.ActorCell$$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) > {noformat} -- This message was sent by Atlassian JIRA (v7.6.3#76005)