[jboss-jira] [JBoss JIRA] (REMJMX-157) Resource Leak in RemotingConnector

[Darran Lofthouse (JIRA)]

    [ https://issues.jboss.org/browse/REMJMX-157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13535164#comment-13535164 ] 

Darran Lofthouse commented on REMJMX-157:
-----------------------------------------

Have you tested this using the latest version of Remoting JMX included in WildFly 11?  There have been some changes in relation to connection and endpoint handling in that release that may have already had an impact here.

> Resource Leak in RemotingConnector
> ----------------------------------
>
>                 Key: REMJMX-157
>                 URL: https://issues.jboss.org/browse/REMJMX-157
>             Project: Remoting JMX
>          Issue Type: Bug
>            Reporter: Stefan Mocken
>            Assignee: Darran Lofthouse
>
> If opening a Connection fails for any reason, the Endpoint is not closed.
> So in a corrosponding thread dump for every failed connection there will be the following dead entries:
> ############################################################
> "Remoting "endpoint" Accept" #215802 daemon prio=5 os_prio=0 tid=0x00007f48dc21a000 nid=0x4e8e runnable [0x00007f48894d6000]
> 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 <0x00000000f01d1d10> (a sun.nio.ch.Util$3)
> - locked <0x00000000f01d1d00> (a java.util.Collections$UnmodifiableSet)
> - locked <0x00000000f01d1be8> (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.xnio.nio.WorkerThread.run(WorkerThread.java:509)
> "Remoting "endpoint" I/O-1" #215801 daemon prio=5 os_prio=0 tid=0x00007f48dc08c000 nid=0x4e8d runnable [0x00007f4885ea0000]
> 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 <0x00000000f01cc188> (a sun.nio.ch.Util$3)
> - locked <0x00000000f01cc178> (a java.util.Collections$UnmodifiableSet)
> - locked <0x00000000f01cc060> (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.xnio.nio.WorkerThread.run(WorkerThread.java:509)
> ############################################################
> NitinRanjan suggested to patch
> the close() method of RemotingConnector.java which is responsible for closing the endpoint threads and others.
> In case of connection not established the state is UNUSED which makes the close method to return without closing the endpoint thread.



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