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https://issues.apache.org/jira/browse/HBASE-16670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15512346#comment-15512346
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Anoop Sam John commented on HBASE-16670:
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+1. Its ok to fix. DNRIOE looks much better Exception reported back, rather
than NPE. Go for the commit pls.
> 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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