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Cloud Proxy - WARN failed to register an accepted channel

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Article ID: 200700

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Updated On:

Products

CA Application Performance Management SaaS

Issue/Introduction

Seeing one of my Cloud Proxies with a lot of this error in the logs, what constraint is it bumping up against?

 

 WARN 25987 --- [nioEventLoopGroup-3-1] io.netty.bootstrap.ServerBootstrap       : Failed to register an accepted channel: [id: 0x96062d40, L:0.0.0.0/0.0.0.0:5001]

 

java.lang.NullPointerException: null

        at sun.nio.ch.EPollArrayWrapper.isEventsHighKilled(EPollArrayWrapper.java:174) ~[na:1.8.0_262]

        at sun.nio.ch.EPollArrayWrapper.setUpdateEvents(EPollArrayWrapper.java:190) ~[na:1.8.0_262]

        at sun.nio.ch.EPollArrayWrapper.add(EPollArrayWrapper.java:239) ~[na:1.8.0_262]

        at sun.nio.ch.EPollSelectorImpl.implRegister(EPollSelectorImpl.java:178) ~[na:1.8.0_262]

        at sun.nio.ch.SelectorImpl.register(SelectorImpl.java:132) ~[na:1.8.0_262]

        at java.nio.channels.spi.AbstractSelectableChannel.register(AbstractSelectableChannel.java:219) ~[na:1.8.0_262]

        at io.netty.channel.nio.AbstractNioChannel.doRegister(AbstractNioChannel.java:380) ~[netty-all-4.1.48.Final.jar:4.1.48.Final]

        at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:496) [netty-all-4.1.48.Final.jar:4.1.48.Final]

        at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:417) [netty-all-4.1.48.Final.jar:4.1.48.Final]

        at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:474) [netty-all-4.1.48.Final.jar:4.1.48.Final]

        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164) [netty-all-4.1.48.Final.jar:4.1.48.Final]

        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472) [netty-all-4.1.48.Final.jar:4.1.48.Final]

        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500) [netty-all-4.1.48.Final.jar:4.1.48.Final]

        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) [netty-all-4.1.48.Final.jar:4.1.48.Final]

        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-all-4.1.48.Final.jar:4.1.48.Final]

        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-all-4.1.48.Final.jar:4.1.48.Final]

        at java.lang.Thread.run(Thread.java:748) [na:1.8.0_262]

Cause

Caused by OS, basically the dynamic increase the process open file is not working 

a JVM Bug 

Environment

Release : SAAS

Component : CLOUD PROXY EXTENSION

Resolution

Manually increase the process open file handle limit on the  Linux system