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https://issues.apache.org/jira/browse/HBASE-13318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14975117#comment-14975117
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Andrew Purtell commented on HBASE-13318:
----------------------------------------
Ok, committing shortly. Thanks [~lhofhansl] for taking a look
> RpcServer.getListenerAddress should handle when the accept channel is closed
> ----------------------------------------------------------------------------
>
> Key: HBASE-13318
> URL: https://issues.apache.org/jira/browse/HBASE-13318
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Assignee: Andrew Purtell
> Priority: Minor
> Labels: thread-safety
> Fix For: 2.0.0, 1.2.0, 1.3.0, 1.0.3, 1.1.3, 0.98.16
>
> Attachments: HBASE-13318.patch
>
>
> We just saw exceptions like these:
> {noformat}
> Exception in thread "B.DefaultRpcServer.handler=45,queue=0,port=60020"
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.ipc.RpcServer$Listener.getAddress(RpcServer.java:753)
> at
> org.apache.hadoop.hbase.ipc.RpcServer.getListenerAddress(RpcServer.java:2157)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:146)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> Looks like RpcServer$Listener.getAddress should be synchronized
> (acceptChannel is set to null upon exiting the thread under in a synchronized
> block).
> Should be happening very rarely only.
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