[jira] [Created] (HBASE-13318) RpcServer.Listener.getAddress should be synchronized

["Lars Hofhansl (JIRA)" <ji...@apache.org>]

Lars Hofhansl created HBASE-13318:
-------------------------------------

             Summary: 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


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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