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https://issues.apache.org/jira/browse/HBASE-16670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15512149#comment-15512149
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Anoop Sam John commented on HBASE-16670:
----------------------------------------

So how u r getting a requesting of this type?

> Make RpcServer#processRequest logic more robust
> -----------------------------------------------
>
>                 Key: HBASE-16670
>                 URL: https://issues.apache.org/jira/browse/HBASE-16670
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Yu Li
>            Assignee: Yu Li
>            Priority: Minor
>         Attachments: HBASE-16670.patch
>
>
> Currently in {{RpcServer#processRequest}}, we will check whether the request 
> header has parameters but missed handling the abnormal case, so if there's no 
> param in the header, it will throw NPE like below:
> {noformat}
> org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(java.io.IOException): 
> java.io.IOException
>       at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2269)
>       at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:123)
>       at 
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:189)
>       at 
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:169)
> Caused by: java.lang.NullPointerException
>       at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2211)
> {noformat}



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