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From "Nitin Aggarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13318) RpcServer.Listener.getAddress should be synchronized
Date Mon, 19 Oct 2015 18:30:28 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14963780#comment-14963780
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Nitin Aggarwal commented on HBASE-13318:
----------------------------------------

We are seeing this issue as well, any updates for it?

> RpcServer.Listener.getAddress should be synchronized
> ----------------------------------------------------
>
>                 Key: HBASE-13318
>                 URL: https://issues.apache.org/jira/browse/HBASE-13318
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.10.1
>            Reporter: Lars Hofhansl
>            Priority: Minor
>              Labels: thread-safety
>
> 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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