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From "Rajeshbabu Chintaguntla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12975) SplitTranaction, RegionMergeTransaction to should have InterfaceAudience of LimitedPrivate(Coproc,Phoenix)
Date Thu, 05 Feb 2015 21:53:36 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14308064#comment-14308064
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Rajeshbabu Chintaguntla commented on HBASE-12975:
-------------------------------------------------

[~lhofhansl] Yes that will be helpful but just thinking how we can make a split on a region
into joint split in case of auto split? for this do we need to have some hooks again?

> SplitTranaction, RegionMergeTransaction to should have InterfaceAudience of LimitedPrivate(Coproc,Phoenix)
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-12975
>                 URL: https://issues.apache.org/jira/browse/HBASE-12975
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Rajeshbabu Chintaguntla
>            Assignee: Rajeshbabu Chintaguntla
>            Priority: Minor
>             Fix For: 2.0.0, 1.0.1, 1.1.0, 0.98.11
>
>         Attachments: 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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