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https://issues.apache.org/jira/browse/ZOOKEEPER-1620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13557331#comment-13557331
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Alexander Shraer commented on ZOOKEEPER-1620:
---------------------------------------------
Thawan, I suggest that you change the last assertion to "(endFdCount -
startFdCount) < 2)"
and in NIOServerCnxnFactory.stop() add thread.closeSelector() right before or
right after thread.wakeupSelector()
> NIOServerCnxnFactory (new code introduced in ZK-1504) opens selectors but
> never closes them
> -------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-1620
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1620
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.5.0
> Reporter: Alexander Shraer
> Assignee: Thawan Kooburat
> Fix For: 3.5.0
>
> Attachments: ZOOKEEPER-1620.patch, ZOOKEEPER-1620.patch
>
>
> New code (committed in ZK-1504) opens selectors but doesn't close them.
> Specifically AbstractSelectThread in its constructor does
> this.selector = Selector.open();
> But possibly also elsewhere. Tests fail for me with the following message:
> java.io.IOException: Too many open files
> at sun.nio.ch.EPollArrayWrapper.epollCreate(Native Method)
> at sun.nio.ch.EPollArrayWrapper.<init>(EPollArrayWrapper.java:69)
> at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:52)
> at
> sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:18)
> at java.nio.channels.Selector.open(Selector.java:209)
> at
> org.apache.zookeeper.server.NIOServerCnxnFactory$AbstractSelectThread.<init>(NIOServerCnxnFactory.java:128)
> at
> org.apache.zookeeper.server.NIOServerCnxnFactory$AcceptThread.<init>(NIOServerCnxnFactory.java:177)
> at
> org.apache.zookeeper.server.NIOServerCnxnFactory.configure(NIOServerCnxnFactory.java:663)
> at
> org.apache.zookeeper.server.ServerCnxnFactory.createFactory(ServerCnxnFactory.java:127)
> at
> org.apache.zookeeper.server.quorum.QuorumPeer.<init>(QuorumPeer.java:709)
> at
> org.apache.zookeeper.test.QuorumBase.startServers(QuorumBase.java:177)
> at org.apache.zookeeper.test.QuorumBase.setUp(QuorumBase.java:113)
> at org.apache.zookeeper.test.QuorumBase.setUp(QuorumBase.java:71)
> at org.apache.zookeeper.test.ReconfigTest.setUp(ReconfigTest.java:56)
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