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From "Abhishek Singh Chouhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18127) Enable state to be passed between the region observer coprocessor hook calls
Date Fri, 13 Oct 2017 12:30:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16203491#comment-16203491
] 

Abhishek Singh Chouhan commented on HBASE-18127:
------------------------------------------------

Yep passing the object here and there and creating across flows is a bit ugly :) Creating
the OperationContext in RpcCallContext and getting it when ObserverContext is created looks
to be a better idea. Let me come up with a patch that does as you mentioned. Thanks for taking
the time and reviewing [~anoop.hbase]!!

> Enable state to be passed between the region observer coprocessor hook calls
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-18127
>                 URL: https://issues.apache.org/jira/browse/HBASE-18127
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Lars Hofhansl
>            Assignee: Abhishek Singh Chouhan
>         Attachments: HBASE-18127.master.001.patch, HBASE-18127.master.002.patch, HBASE-18127.master.002.patch,
HBASE-18127.master.003.patch, HBASE-18127.master.004.patch, HBASE-18127.master.005.patch,
HBASE-18127.master.005.patch, HBASE-18127.master.006.patch
>
>
> Allow regionobserver to optionally skip postPut/postDelete when postBatchMutate was called.
> Right now a RegionObserver can only statically implement one or the other. In scenarios
where we need to work sometimes on the single postPut and postDelete hooks and sometimes on
the batchMutate hooks, there is currently no place to convey this information to the single
hooks. I.e. the work has been done in the batch, skip the single hooks.
> There are various solutions:
> 1. Allow some state to be passed _per operation_.
> 2. Remove the single hooks and always only call batch hooks (with a default wrapper for
the single hooks).
> 3. more?
> [~apurtell], what we had discussed a few days back.



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