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https://issues.apache.org/jira/browse/HBASE-19708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16313732#comment-16313732
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Hudson commented on HBASE-19708:
--------------------------------

SUCCESS: Integrated in Jenkins build HBase-1.2-IT #1054 (See 
[https://builds.apache.org/job/HBase-1.2-IT/1054/])
HBASE-19708 Avoid NPE when the RPC listener's accept channel is closed 
(apurtell: rev d48f9e4d40aacb2fb624c8cfd8ecbc83be5074fd)
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcServer.java


> Avoid NPE when the RPC listener's accept channel is closed
> ----------------------------------------------------------
>
>                 Key: HBASE-19708
>                 URL: https://issues.apache.org/jira/browse/HBASE-19708
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.24
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 1.3.2, 1.4.1, 1.5.0, 1.2.7
>
>         Attachments: HBASE-19708-branch-1.patch, HBASE-19708-branch-1.patch
>
>
> Rare NPE when the listener's accept channel is closed. We serialize access to 
> related state to avoid a previously fixed related NPE and need to do the same 
> for {{acceptChannel}}. Seen in a 0.98 deploy but I think applicable to later 
> code lines. Let me check.
> Exception in thread "MetadataRpcServer.handler=191,queue=0,port=60020" 
> java.lang.NullPointerException
>       at 
> org.apache.hadoop.hbase.ipc.RpcServer$Listener.getAddress(RpcServer.java:858)
>       at 
> org.apache.hadoop.hbase.ipc.RpcServer.getListenerAddress(RpcServer.java:2338)
>       at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:140)
>       at 
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
>       at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
>       at java.lang.Thread.run(Thread.java:745)



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