Flink 1.13.2：NoResourceAvailableException

Question

这是在 Amazon 的 Kinesis Data Analytics Flink 环境中使用 Flink 1.13.2 运行。

此应用程序运行关于 Kafka 主题。当主题的流量较小时，此应用程序运行正常，流量较大时，我收到此错误。如何进行故障排除、调整和修复？

我看到类似这样的 SO 问题，但这显然是旧版本 Flink 中的一个单独问题： Apache Flink - WordCount - NoResourceAvailableException

异常跟踪是：

2021-12-30 18:16:45
java.util.concurrent.CompletionException: org.apache.flink.runtime.jobmanager.scheduler.NoResourceAvailableException: Could not acquire the minimum required resources.
    at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:331)
    at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:346)
    at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:632)
    at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
    at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2088)
    at org.apache.flink.runtime.jobmaster.slotpool.DeclarativeSlotPoolBridge$PendingRequest.failRequest(DeclarativeSlotPoolBridge.java:535)
    at org.apache.flink.runtime.jobmaster.slotpool.DeclarativeSlotPoolBridge.cancelPendingRequests(DeclarativeSlotPoolBridge.java:128)
    at org.apache.flink.runtime.jobmaster.slotpool.DeclarativeSlotPoolBridge.failPendingRequests(DeclarativeSlotPoolBridge.java:362)
    at org.apache.flink.runtime.jobmaster.slotpool.DeclarativeSlotPoolBridge.notifyNotEnoughResourcesAvailable(DeclarativeSlotPoolBridge.java:351)
    at org.apache.flink.runtime.jobmaster.JobMaster.notifyNotEnoughResourcesAvailable(JobMaster.java:824)
    at jdk.internal.reflect.GeneratedMethodAccessor133.invoke(Unknown Source)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:301)
    at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:212)
    at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:77)
    at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:158)
    at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26)
    at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21)
    at scala.PartialFunction.applyOrElse(PartialFunction.scala:123)
    at scala.PartialFunction.applyOrElse$(PartialFunction.scala:122)
    at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21)
    at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171)
    at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172)
    at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:172)
    at akka.actor.Actor.aroundReceive(Actor.scala:517)
    at akka.actor.Actor.aroundReceive$(Actor.scala:515)
    at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:225)
    at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592)
    at akka.actor.ActorCell.invoke(ActorCell.scala:561)
    at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258)
    at akka.dispatch.Mailbox.run(Mailbox.scala:225)
    at akka.dispatch.Mailbox.exec(Mailbox.scala:235)
    at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
    at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
    at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
    at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: org.apache.flink.runtime.jobmanager.scheduler.NoResourceAvailableException: Could not acquire the minimum required resources.
    ... 30 more

Answer 1

从任务错误的角度来看，只是因为没有资源，这与反馈中提到的其他问题不同。

或许你可以降低并行度试试看

Answer 2

NoResourceAvailableException 表示没有足够的可用任务槽来满足运行作业。要么增加每个 TaskManager 的槽数，要么向 Flink 集群添加额外的 TaskManager 实例。按照 ChangLi 的建议减少作业的并行度也可能有所帮助。

Answer 3

我遇到了这个问题，我的解决方法是：配置文件'conf/flink-conf.yaml'

taskmanager.numberOfTaskSlots: 1

改为

taskmanager.numberOfTaskSlots: 30

这个插槽取决于运行任务的数量

Flink 1.13.2：NoResourceAvailableException

Flink 1.13.2: NoResourceAvailableException

apache-flink

flink-streaming