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https://issues.apache.org/jira/browse/HBASE-16093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15356234#comment-15356234
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Sean Busbey commented on HBASE-16093:
-------------------------------------
pushed to branch-1.2 and branch-1.1. [~apurtell] it looks like [the same blind
"enable parent, disable children" happens in
0.98|https://github.com/apache/hbase/blob/0.98/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java#L3796],
but I don't have a good enough idea anymore about how things work in 0.98 to
know if it matters there.
> Splits failed before creating daughter regions leave meta inconsistent
> ----------------------------------------------------------------------
>
> Key: HBASE-16093
> URL: https://issues.apache.org/jira/browse/HBASE-16093
> Project: HBase
> Issue Type: Bug
> Components: master, Region Assignment
> Affects Versions: 1.3.0, 1.2.1
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Priority: Critical
> Fix For: 1.3.0, 1.4.0, 1.2.2, 1.1.6
>
> Attachments: HBASE-16093.branch-1.patch
>
>
> This is on branch-1 based code only.
> Here's the sequence of events.
> # A regionserver opens a new region. That regions looks like it should split.
> # So the regionserver starts a split transaction.
> # Split transaction starts execute
> # Split transaction encounters an error in stepsBeforePONR
> # Split transaction starts rollback
> # Split transaction notifies master that it's rolling back using
> HMasterRpcServices#reportRegionStateTransition
> # AssignmentManager#onRegionTransition is called with SPLIT_REVERTED
> # AssignmentManager#onRegionSplitReverted is called.
> # That onlines the parent region and offlines the daughter regions.
> However the daughter regions were never created in meta so all that gets done
> is that state for those rows gets OFFLINE. Now all clients trying to get the
> parent instead get the offline daughter.
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