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Posted to dev@bookkeeper.apache.org by "Rakesh R (JIRA)" <ji...@apache.org> on 2013/11/18 15:15:21 UTC
[jira] [Commented] (BOOKKEEPER-678) BookieServer shutdown hangs
indefinitely at NioServerSocketChannelFactory.releaseExternalResources
[ https://issues.apache.org/jira/browse/BOOKKEEPER-678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13825336#comment-13825336 ]
Rakesh R commented on BOOKKEEPER-678:
-------------------------------------
In my laptop(Windows-7, 64bit machine) BookieFailureTest.testAsyncBK3 test case is failing. From netty, releaseExternalResources would hang when there's an open channel exist. I could see bug fix https://issues.jboss.org/browse/NETTY-417 which talks about the possibilities of open channels after closure. Also, when seen netty release notes there are other potential bug fixes happened after 3.2.4 (I didn't gone through much on their internals about these fixes).
> BookieServer shutdown hangs indefinitely at NioServerSocketChannelFactory.releaseExternalResources
> --------------------------------------------------------------------------------------------------
>
> Key: BOOKKEEPER-678
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-678
> Project: Bookkeeper
> Issue Type: Bug
> Components: bookkeeper-server
> Reporter: Rakesh R
> Assignee: Rakesh R
> Fix For: 4.3.0
>
> Attachments: 0001-BOOKKEEPER-678-ThreadDump-bkServer-hangs-at-release-external-resources.th, 0001-BOOKKEEPER-678-upgraded-netty-version.patch
>
>
> BookieFailureTest testcase hangs randomly in my environment(Windows 7), when I checked the threaddump, its waiting at NIO's releaseExternalResources. Please have a look at the following threaddump.
> {code}
> "Thread-6" prio=6 tid=0x0000000007676800 nid=0x19ac waiting on condition [0x000000000b1ae000]
> java.lang.Thread.State: TIMED_WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000000c3278068> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:196)
> at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)
> at java.util.concurrent.ThreadPoolExecutor.awaitTermination(ThreadPoolExecutor.java:1261)
> at org.jboss.netty.util.internal.ExecutorUtil.terminate(ExecutorUtil.java:107)
> at org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory.releaseExternalResources(NioServerSocketChannelFactory.java:146)
> at org.apache.bookkeeper.proto.BookieNettyServer.shutdown(BookieNettyServer.java:149)
> at org.apache.bookkeeper.proto.BookieServer.shutdown(BookieServer.java:138)
> - locked <0x00000000c3277ca8> (a org.apache.bookkeeper.proto.BookieServer)
> at org.apache.bookkeeper.test.BookieFailureTest.auxTestReadWriteAsyncSingleClient(BookieFailureTest.java:177)
> at org.apache.bookkeeper.test.BookieFailureTest.testAsyncBK3(BookieFailureTest.java:114)
> {code}
> Also, full threaddump is attached to this JIRA.
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