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https://issues.apache.org/jira/browse/BOOKKEEPER-688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rakesh R reopened BOOKKEEPER-688:
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IMHO, it would be good to backport the changes to branch4.2 as well. Please
feel free to close if anyone has different opinion. Thanks
> NPE exception in PerChannelBookieClient
> ---------------------------------------
>
> Key: BOOKKEEPER-688
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-688
> Project: Bookkeeper
> Issue Type: Bug
> Affects Versions: 4.2.0
> Reporter: Rakesh R
> Assignee: Ivan Kelly
> Fix For: 4.3.0, 4.2.3
>
> Attachments:
> 0001-BOOKKEEPER-688-NPE-exception-in-PerChannelBookieClie.patch,
> BOOKKEEPER-688_branch_4_2.patch, BOOKKEEPER-688_trunk.patch,
> PerChannelBookieClient-ConnectionState-diagram.png
>
>
> NPE exception in PerChannelBookieClient:
> {code}
> 2013-10-04 11:56:34,526 - INFO -
> [NIOServerFactory-15099:NIOServerFactory$Cnxn@246] - Peer closed connection.
> rc=-1 java.nio.channels.SocketChannel[connected local=/10.18.170.130:15099
> remote=/10.18.170.130:53945]
> 2013-10-04 11:56:34,526 - INFO - [Thread-93:PerChannelBookieClient@493] -
> Disconnected from bookie channel [id: 0x006287d3, /10.18.170.130:53945 :>
> /10.18.170.130:15099]
> 2013-10-04 11:56:34,526 - INFO - [New I/O client worker
> #90-3:PerChannelBookieClient$1@137] - Successfully connected to bookie: [id:
> 0x01964fe8, /10.18.170.130:53951 => /10.18.170.130:15100]
> 2013-10-04 11:56:34,542 - INFO -
> [NIOServerFactory-15100:NIOServerFactory$Cnxn@246] - Peer closed connection.
> rc=-1 java.nio.channels.SocketChannel[connected local=/10.18.170.130:15100
> remote=/10.18.170.130:53951]
> 2013-10-04 11:56:34,542 - INFO - [Thread-93:PerChannelBookieClient@493] -
> Disconnected from bookie channel [id: 0x01964fe8, /10.18.170.130:53951 :>
> /10.18.170.130:15100]
> 2013-10-04 11:56:34,542 - WARN - [New I/O client worker
> #90-3:PerChannelBookieClient@274] - Add entry operation failed
> java.lang.NullPointerException
> at
> org.apache.bookkeeper.proto.PerChannelBookieClient.addEntry(PerChannelBookieClient.java:258)
> at
> org.apache.bookkeeper.proto.BookieClient$2.operationComplete(BookieClient.java:138)
> at
> org.apache.bookkeeper.proto.BookieClient$2.operationComplete(BookieClient.java:1)
> at
> org.apache.bookkeeper.proto.PerChannelBookieClient$1.operationComplete(PerChannelBookieClient.java:173)
> at
> org.jboss.netty.channel.DefaultChannelFuture.notifyListener(DefaultChannelFuture.java:381)
> at
> org.jboss.netty.channel.DefaultChannelFuture.notifyListeners(DefaultChannelFuture.java:372)
> at
> org.jboss.netty.channel.DefaultChannelFuture.setSuccess(DefaultChannelFuture.java:316)
> at
> org.jboss.netty.channel.socket.nio.NioWorker$RegisterTask.run(NioWorker.java:767)
> at
> org.jboss.netty.channel.socket.nio.NioWorker.processRegisterTaskQueue(NioWorker.java:256)
> at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:198)
> at
> org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
> at
> org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:44)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> at java.lang.Thread.run(Thread.java:619)
> 4 Oct, 2013 11:56:34 AM org.jboss.netty.channel.DefaultChannelFuture
> WARNING: An exception was thrown by ChannelFutureListener.
> {code}
> Here the operation which is performed is
> step-1 addEntry asynchronously
> step-2 Immediately after adding the entry, close the bookie client
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