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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16505) Add AsyncRegion interface to pass deadline and support async operations
Date Fri, 09 Sep 2016 05:34:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15475984#comment-15475984
] 

Duo Zhang commented on HBASE-16505:
-----------------------------------

I think we should first find the most suitable way to solve the problem, and then consider
how to backport it.

For branch-1, if we can assume that the code is always execute in a rpc handler thread, then
maybe we could use ThreadLocal to pass some parameters. For example, we already have a RpcServer.getCurrentCall
to get the information of the current rpc call. Maybe we can add a getDeadline to the return
value. But I think this is not a good practice so we should not use it on master.

> 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
>             Fix For: 2.0.0
>
>         Attachments: HBASE-16505-v1.patch, HBASE-16505-v10.patch, HBASE-16505-v10.patch,
HBASE-16505-v2.patch, HBASE-16505-v3.patch, HBASE-16505-v4.patch, HBASE-16505-v5.patch, HBASE-16505-v6.patch,
HBASE-16505-v7.patch, HBASE-16505-v8.patch, HBASE-16505-v9.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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