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https://issues.apache.org/jira/browse/HBASE-5179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13189239#comment-13189239
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Zhihong Yu commented on HBASE-5179:
-----------------------------------
@Stack:
Thanks for your review.
Looks like we still have some work to really solve this issue. After that we
can align naming to your liking.
w.r.t. local log splitting, to my knowledge there is no priority in distributed
log splitting. The rationale is to make log splitting of .META. server quick.
> Concurrent processing of processFaileOver and ServerShutdownHandler may cause
> region to be assigned before log splitting is completed, causing data loss
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-5179
> URL: https://issues.apache.org/jira/browse/HBASE-5179
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.2
> Reporter: chunhui shen
> Assignee: chunhui shen
> Priority: Critical
> Fix For: 0.92.0, 0.94.0, 0.90.6
>
> Attachments: 5179-90.txt, 5179-90v10.patch, 5179-90v11.patch,
> 5179-90v12.patch, 5179-90v2.patch, 5179-90v3.patch, 5179-90v4.patch,
> 5179-90v5.patch, 5179-90v6.patch, 5179-90v7.patch, 5179-90v8.patch,
> 5179-90v9.patch, 5179-v11-92.txt, 5179-v11.txt, 5179-v2.txt, 5179-v3.txt,
> 5179-v4.txt, Errorlog, hbase-5179.patch, hbase-5179v10.patch,
> hbase-5179v12.patch, hbase-5179v5.patch, hbase-5179v6.patch,
> hbase-5179v7.patch, hbase-5179v8.patch, hbase-5179v9.patch
>
>
> If master's processing its failover and ServerShutdownHandler's processing
> happen concurrently, it may appear following case.
> 1.master completed splitLogAfterStartup()
> 2.RegionserverA restarts, and ServerShutdownHandler is processing.
> 3.master starts to rebuildUserRegions, and RegionserverA is considered as
> dead server.
> 4.master starts to assign regions of RegionserverA because it is a dead
> server by step3.
> However, when doing step4(assigning region), ServerShutdownHandler may be
> doing split log, Therefore, it may cause data loss.
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