Question

Flink 1.5.3，当我将flink作业提交到flink集群（在纱线上）时，它总是抛出AskTimeoutException。在flink配置文件中，我已经配置了参数“ akka.ask.timeout = 1000s”，但是下面的异常仍然如此。

这意味着我增加了超时参数“ akka.ask.timeout=1000s”，但是它不起作用。

org.apache.flink.runtime.rest.handler.RestHandlerException: Job submission failed.
    at org.apache.flink.runtime.rest.handler.job.JobSubmitHandler.lambda$handleRequest$2(JobSubmitHandler.java:116)
    at java.util.concurrent.CompletableFuture.uniExceptionally(CompletableFuture.java:870)
    at java.util.concurrent.CompletableFuture$UniExceptionally.tryFire(CompletableFuture.java:852)
    at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
    at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977)
    at org.apache.flink.runtime.concurrent.FutureUtils$1.onComplete(FutureUtils.java:770)
    at akka.dispatch.OnComplete.internal(Future.scala:258)
    at akka.dispatch.OnComplete.internal(Future.scala:256)
    at akka.dispatch.japi$CallbackBridge.apply(Future.scala:186)
    at akka.dispatch.japi$CallbackBridge.apply(Future.scala:183)
    at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:36)
    at org.apache.flink.runtime.concurrent.Executors$DirectExecutionContext.execute(Executors.java:83)
    at scala.concurrent.impl.CallbackRunnable.executeWithValue(Promise.scala:44)
    at scala.concurrent.impl.Promise$DefaultPromise.tryComplete(Promise.scala:252)
    at akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:603)
    at akka.actor.Scheduler$$anon$4.run(Scheduler.scala:126)
    at scala.concurrent.Future$InternalCallbackExecutor$.unbatchedExecute(Future.scala:601)
    at scala.concurrent.BatchingExecutor$class.execute(BatchingExecutor.scala:109)
    at scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:599)
    at akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(LightArrayRevolverScheduler.scala:329)
    at akka.actor.LightArrayRevolverScheduler$$anon$4.executeBucket$1(LightArrayRevolverScheduler.scala:280)
    at akka.actor.LightArrayRevolverScheduler$$anon$4.nextTick(LightArrayRevolverScheduler.scala:284)
    at akka.actor.LightArrayRevolverScheduler$$anon$4.run(LightArrayRevolverScheduler.scala:236)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.concurrent.CompletionException: akka.pattern.AskTimeoutException: Ask timed out on [Actor[akka://flink/user/dispatcher#-1851759541]] after [10000 ms]. Sender[null] sent message of type "org.apache.flink.runtime.rpc.messages.LocalFencedMessage".
    at java.util.concurrent.CompletableFuture.encodeRelay(CompletableFuture.java:326)
    at java.util.concurrent.CompletableFuture.completeRelay(CompletableFuture.java:338)
    at java.util.concurrent.CompletableFuture.uniRelay(CompletableFuture.java:911)
    at java.util.concurrent.CompletableFuture$UniRelay.tryFire(CompletableFuture.java:899)
    ... 21 more

Caused by: akka.pattern.AskTimeoutException: Ask timed out on [Actor[akka://flink/user/dispatcher#-1851759541]] after [10000 ms]. Sender[null] sent message of type "org.apache.flink.runtime.rpc.messages.LocalFencedMessage".
    at akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:604)
    ... 9 more

那么有什么解决方案可以避免这个问题？

Answer 1

REST处理程序和Flink集群之间的通信超时由web.timeout控制。超时以毫秒为单位，因此，如果要等待1000秒，则需要在web.timeout: 1000000中将其设置为flink-conf.yaml。

此外，最好检查集群入口点日志，为什么作业提交需要这么长时间。通常，该过程不应超过10秒。

提交flink作业时如何处理akka AskTimeoutException

1 个答案: