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https://issues.apache.org/jira/browse/GIRAPH-1144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15979192#comment-15979192
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Hassan Eslami commented on GIRAPH-1144:
---------------------------------------
This is the "resume signal" sent after the Netty shuts down. This is a harmless
corner case, we can add a few lines to avoid this. When Netty shuts down, the
computation is done too, so even if we don't send the "resume signal" things
are all good.
> Out-of-core control flow sends messages after Netty shuts down
> --------------------------------------------------------------
>
> Key: GIRAPH-1144
> URL: https://issues.apache.org/jira/browse/GIRAPH-1144
> Project: Giraph
> Issue Type: Bug
> Reporter: Dionysios Logothetis
> Assignee: Dionysios Logothetis
>
> java.util.concurrent.RejectedExecutionException: event executor terminated
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:703)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.addTask(SingleThreadEventExecutor.java:296)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:691)
> at
> io.netty.channel.AbstractChannel$AbstractUnsafe.register(AbstractChannel.java:415)
> at
> io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:60)
> at
> io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:48)
> at
> io.netty.channel.MultithreadEventLoopGroup.register(MultithreadEventLoopGroup.java:64)
> at
> io.netty.bootstrap.AbstractBootstrap.initAndRegister(AbstractBootstrap.java:305)
> at io.netty.bootstrap.Bootstrap.doConnect(Bootstrap.java:133)
> at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:115)
> at
> org.apache.giraph.comm.netty.NettyClient.getNextChannel(NettyClient.java:714)
> at
> org.apache.giraph.comm.netty.NettyClient.writeRequestToChannel(NettyClient.java:799)
> at org.apache.giraph.comm.netty.NettyClient.doSend(NettyClient.java:789)
> at
> org.apache.giraph.comm.flow_control.CreditBasedFlowControl.sendResumeSignal(CreditBasedFlowControl.java:273)
> at
> org.apache.giraph.comm.flow_control.CreditBasedFlowControl.access$200(CreditBasedFlowControl.java:77)
> at
> org.apache.giraph.comm.flow_control.CreditBasedFlowControl$1.run(CreditBasedFlowControl.java:219)
> at java.lang.Thread.run(Thread.java:745)
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