这个其实原因是阿里云的LoadBalancer探活机制不停的给Flink的rest endpoint发送RST导致的
目前有一个ticket来跟进这个问题[1],但还没有修复

短时间内你可以通过log4j的配置将org.apache.flink.runtime.jobmaster.MiniDispatcherRestEndpoint
这个package的log level设置为WARN来暂时避免

[1]. https://issues.apache.org/jira/browse/FLINK-18129


Best,
Yang

王 羽凡 <wangyufan...@gmail.com> 于2021年3月1日周一 下午1:01写道:

> 使用Flink1.12 Application Mode在阿里云托管Kubernetes
> ACK启动发现一些报错,同样的报错在自建Kubernetes集群中未发现。
> 但是观察taskmanager容器有正常启动,后续任务也可正常执行,针对该报错需如何处理?是不兼容阿里云ACK集群么?
>
> 启动命令:
> ./bin/flink run-application \
>     --target kubernetes-application \
>     -Dkubernetes.cluster-id=demo \
>     -Dkubernetes.container.image=xx.xx.xx/xx/xxx:2.0.12 \
>     local:///opt/flink/usrlib/my-flink-job.jar
>
> 日志:
> 2021-03-01 04:52:06,518 INFO
> org.apache.flink.client.deployment.application.executors.EmbeddedExecutor
> [] - Job 6eb4027586e7137b20ecc8c3ce624417 is submitted.
> 2021-03-01 04:52:06,518 INFO
> org.apache.flink.client.deployment.application.executors.EmbeddedExecutor
> [] - Submitting Job with JobId=6eb4027586e7137b20ecc8c3ce624417.
> 2021-03-01 04:52:08,303 INFO
> org.apache.flink.kubernetes.KubernetesResourceManagerDriver  [] - Recovered
> 0 pods from previous attempts, current attempt id is 1.
> 2021-03-01 04:52:08,303 INFO
> org.apache.flink.runtime.resourcemanager.active.ActiveResourceManager [] -
> Recovered 0 workers from previous attempt.
> 2021-03-01 04:52:08,306 INFO
> org.apache.flink.runtime.resourcemanager.active.ActiveResourceManager [] -
> ResourceManager akka.tcp://flink@demo.default:6123/user/rpc/resourcemanager_0
> was granted leadership with fencing token 00000000000000000000000000000000
> 2021-03-01 04:52:08,310 INFO
> org.apache.flink.runtime.resourcemanager.slotmanager.SlotManagerImpl [] -
> Starting the SlotManager.
> 2021-03-01 04:52:08,596 WARN
> org.apache.flink.runtime.jobmaster.MiniDispatcherRestEndpoint [] -
> Unhandled exception
> java.io.IOException: Connection reset by peer
> at sun.nio.ch.FileDispatcherImpl.read0(Native Method) ~[?:1.8.0_275]
> at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
> ~[?:1.8.0_275]
> at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) ~[?:1.8.0_275]
> at sun.nio.ch.IOUtil.read(IOUtil.java:192) ~[?:1.8.0_275]
> at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
> ~[?:1.8.0_275]
> at
> org.apache.flink.shaded.netty4.io.netty.buffer.PooledByteBuf.setBytes(PooledByteBuf.java:253)
> ~[flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1133)
> ~[flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:350)
> ~[flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]
> 2021-03-01 04:52:08,596 WARN
> org.apache.flink.runtime.jobmaster.MiniDispatcherRestEndpoint [] -
> Unhandled exception
> java.io.IOException: Connection reset by peer
> at sun.nio.ch.FileDispatcherImpl.read0(Native Method) ~[?:1.8.0_275]
> at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
> ~[?:1.8.0_275]
> at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) ~[?:1.8.0_275]
> at sun.nio.ch.IOUtil.read(IOUtil.java:192) ~[?:1.8.0_275]
> at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
> ~[?:1.8.0_275]
> at
> org.apache.flink.shaded.netty4.io.netty.buffer.PooledByteBuf.setBytes(PooledByteBuf.java:253)
> ~[flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1133)
> ~[flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:350)
> ~[flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at
> org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> [flink-dist_2.12-1.12.0.jar:1.12.0]
> at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]
>
> 后续不停日志滚动刷新exception
>

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