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https://issues.apache.org/jira/browse/HBASE-16670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15512286#comment-15512286
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Yu Li commented on HBASE-16670:
-------------------------------
I found this incomplete logic when developing async table codes, some mistake
lead me to some logic like calling {{getStub().mutate(controller, null);}}. So
in our current codes there won't be such a kind of request, this is why I set
the priority of this JIRA to Minor, but I think this is still something worth
improving. Agree?:-)
> 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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