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https://issues.apache.org/jira/browse/THRIFT-4251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16125165#comment-16125165
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ASF GitHub Bot commented on THRIFT-4251:
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Github user Johnny-Liao commented on the issue:
https://github.com/apache/thrift/pull/1313
It's not elegant way to rebuild Selector in every Java program, but it's a
effective way to fix this bug. And so many year passed it not really fixed in
JDK or kernel. This is one reason for some Frameworks implemented this
solution. After all, the consequences of this bug are too serious.
> Epoll Selector Bug
> ------------------
>
> Key: THRIFT-4251
> URL: https://issues.apache.org/jira/browse/THRIFT-4251
> Project: Thrift
> Issue Type: Bug
> Components: Java - Compiler, Java - Library
> Affects Versions: 0.10.0
> Environment: Linux version 3.10.0-327.el7.x86_64
> (buil...@kbuilder.dev.centos.org)
> java version "1.8.0_131"
> Reporter: JohnnyLiao
> Labels: epoll, jdk, selector
>
> Thrift java unsolve the infamous epoll bug. It's consum 100% cpu resource
> when this occured. It seems to affect any NIO based Java server applications
> running in the specified environment. Some projects provide workarounds for
> similar JDK bugs, for example replaces the current Selector of this
> SelectorThread.select with newly created Selector.
> Stack Traceļ¼
> "Thread-46" #95 prio=5 os_prio=0 tid=0x00007fc79cd02800 nid=0xb1 runnable
> [0x00007fc580bd1000]
> java.lang.Thread.State: RUNNABLE
> at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
> at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
> at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)
> at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
> - locked <0x000000008012f748> (a sun.nio.ch.Util$3)
> - locked <0x000000008012f738> (a
> java.util.Collections$UnmodifiableSet)
> - locked <0x0000000080120f58> (a sun.nio.ch.EPollSelectorImpl)
> at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
> at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101)
> at
> org.apache.thrift.server.TThreadedSelectorServer$SelectorThread.select(TThreadedSelectorServer.java:570)
> at
> org.apache.thrift.server.TThreadedSelectorServer$SelectorThread.run(TThreadedSelectorServer.java:541)
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