补充：flink1.15.2版本，standalone集群，基于zk的ha。 环境是公司自研容器环境。3个容器启JM+HistoryServer。剩下几百个容器都是TM。每个TM提供1个slot。
yidan zhao <hinobl...@gmail.com> 于2022年9月27日周二 22:07写道： > > 此外，今天还做了个尝试，貌似和长时间没重启TM有关？重启后频率低很多会。 > 我预留的TM很多，比如500个TM，每个TM就提供1个slot，任务可能只用100个TM。 > 会不会剩下400的TM的连接，时间厂了就会出现某种问题？ > > yidan zhao <hinobl...@gmail.com> 于2022年9月27日周二 16:21写道： > > > > 打开了TM的debug日志后发现很多这种日志： > > Responding with error: class > > org.apache.flink.runtime.io.network.partition.PartitionNotFoundException > > > > 目前问题的直观表现是：提交任务后，一直报 LocalTransportException： > > org.apache.flink.runtime.io.network.netty.exception.LocalTransportException: > > Sending the partition request to '/10.216.187.171:8709 (#0)' failed. > > at > > org.apache.flink.runtime.io.network.netty.NettyPartitionRequestClient$1.operationComplete(NettyPartitionRequestClient.java:145) > > at > > org.apache.flink.runtime.io.network.netty.NettyPartitionRequestClient$1.operationComplete(NettyPartitionRequestClient.java:133) > > at > > org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578) > > at > > org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:552) > > at > > org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491) > > at > > org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:616) > > at > > org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.setFailure0(DefaultPromise.java:609) > > at > > org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.tryFailure(DefaultPromise.java:117) > > at > > org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe.safeSetFailure(AbstractChannel.java:1017) > > at > > org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe.write(AbstractChannel.java:878) > > at > > org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.write(DefaultChannelPipeline.java:1367) > > at > > org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) > > at > > org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:764) > > at > > org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext$WriteTask.run(AbstractChannelHandlerContext.java:1071) > > at > > org.apache.flink.shaded.netty4.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164) > > at > > org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:469) > > at > > org.apache.flink.shaded.netty4.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:384) > > at > > org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986) > > at > > org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) > > at java.lang.Thread.run(Thread.java:748) > > Caused by: > > org.apache.flink.shaded.netty4.io.netty.channel.StacklessClosedChannelException > > at > > org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe.write(Object, > > ChannelPromise)(Unknown Source) > > > > 不清楚和debug的那个日志是否有关呢？ > > > > 然后都是什么原因呢这个问题，之前一直怀疑是网络原因，一直也不知道啥原因。今天开了debug才发现有这么个debug报错。
