Cancel flink job occur exception.

[devinduan(段丁瑞)]

Hi all,

      I submit a flink job through yarn-cluster mode and cancel job with savepoint option immediately after job status change to deployed. Sometimes i met this error: 

org.apache.flink.util.FlinkException: Could not cancel job xxxx.

        at org.apache.flink.client.cli.CliFrontend.lambda$cancel$4(CliFrontend.java:585)

        at org.apache.flink.client.cli.CliFrontend.runClusterAction(CliFrontend.java:960)

        at org.apache.flink.client.cli.CliFrontend.cancel(CliFrontend.java:577)

        at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1034)

        at java.lang.Thread.run(Thread.java:748)

Caused by: java.util.concurrent.ExecutionException: org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not complete the operation. Number of retries has been exhausted.

        at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)

        at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)

        at org.apache.flink.client.program.rest.RestClusterClient.cancelWithSavepoint(RestClusterClient.java:398)

        at org.apache.flink.client.cli.CliFrontend.lambda$cancel$4(CliFrontend.java:583)

        ... 6 more

Caused by: org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not complete the operation. Number of retries has been exhausted.

        at org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$5(FutureUtils.java:213)

        at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)

        at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)

        at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)

        at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977)

        at org.apache.flink.runtime.rest.RestClient.lambda$submitRequest$1(RestClient.java:274)

        at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)

        at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:603)

        at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:563)

        at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:424)

        at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:268)

        at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:284)

        at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:528)

        at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)

        at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)

        at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)

        at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)

        at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)

        ... 1 more

Caused by: java.util.concurrent.CompletionException: java.net.ConnectException: Connect refuse: xxx/xxx.xxx.xxx.xxx:xxx

        at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292)

        at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308)

        at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:943)

        at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926)

        ... 16 more

Caused by: java.net.ConnectException: Connect refuse: xxx/xxx.xxx.xxx.xxx:xxx

        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)

        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)

        at org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:224)

        at org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:281)

        ... 7 more

    I check the jobmanager log, no error found. Savepoint is correct saved in hdfs. Yarn appliction status changed to FINISHED and FinalStatus change to KILLED.

    I think this issue occur because RestClusterClient cannot find jobmanager addresss after Jobmanager(AM) has shutdown.

    My flink version is 1.5.3.

    Anyone could help me to resolve this issue, thanks!

devin.