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https://issues.apache.org/jira/browse/HBASE-16505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15458464#comment-15458464
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Yu Li commented on HBASE-16505:
-------------------------------

{{RpcServerInterface}} is IA.LimitedPrivate, so I think we should add 
TimeoutException but reserve ServiceException on the interface. Or please 
clarify the reason for the below changes, thanks.
{code}
   Pair<Message, CellScanner> call(BlockingService service, MethodDescriptor md,
     Message param, CellScanner cellScanner, long receiveTime, 
MonitoredRPCHandler status)
-  throws IOException, ServiceException;
+      throws IOException, TimeoutException;
 
   Pair<Message, CellScanner> call(BlockingService service, MethodDescriptor 
md, Message param,
       CellScanner cellScanner, long receiveTime, MonitoredRPCHandler status, 
long startTime,
-      int timeout) throws IOException, ServiceException;
+      int timeout) throws IOException, TimeoutException;
{code}

> Add AsyncRegion interface to pass deadline and support async operations
> -----------------------------------------------------------------------
>
>                 Key: HBASE-16505
>                 URL: https://issues.apache.org/jira/browse/HBASE-16505
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Phil Yang
>            Assignee: Phil Yang
>         Attachments: HBASE-16505-v1.patch, HBASE-16505-v2.patch
>
>
> If we want to know the correct setting of timeout in read/write path, we need 
> add a new parameter in operation-methods of Region.



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