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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12975) Supportable SplitTransaction and RegionMergeTransaction interfaces
Date Wed, 08 Apr 2015 20:12:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485928#comment-14485928
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Andrew Purtell commented on HBASE-12975:
----------------------------------------

bq. Here HBASE-13431 I have raised the issue for local index change. It's ok for me to work
on the JIRA if you don't have time.
I can take it, happy to accommodate you.

> Supportable SplitTransaction and RegionMergeTransaction interfaces
> ------------------------------------------------------------------
>
>                 Key: HBASE-12975
>                 URL: https://issues.apache.org/jira/browse/HBASE-12975
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Rajeshbabu Chintaguntla
>            Assignee: Andrew Purtell
>             Fix For: 2.0.0, 1.1.0
>
>         Attachments: HBASE-12975-branch-1.patch, HBASE-12975-branch-1.patch, HBASE-12975.patch,
HBASE-12975.patch, HBASE-12975.patch, HBASE-12975.patch, HBASE-12975.patch
>
>
> Making SplitTransaction, RegionMergeTransaction limited private is required to support
local indexing feature in Phoenix to ensure regions colocation. 
> We can ensure region split, regions merge in the coprocessors in few method calls without
touching internals like creating zk's, file layout changes or assignments.
> 1) stepsBeforePONR, stepsAfterPONR we can ensure split.
> 2) meta entries can pass through coprocessors to atomically update with the normal split/merge.
> 3) rollback on failure.



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