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https://issues.apache.org/jira/browse/HBASE-6227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13393670#comment-13393670
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ramkrishna.s.vasudevan commented on HBASE-6227:
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@Chunhui
Thanks for checking this.
I think if the ROOT and META are assigned to a new RS then in assignRootAndMeta
it should split the log right?
{code}
splitLogAndExpireIfOnline(currentRootServer);
splitLogAndExpireIfOnline(currentMetaServer);
{code}
> SSH and cluster startup causes data loss
> -----------------------------------------
>
> Key: HBASE-6227
> URL: https://issues.apache.org/jira/browse/HBASE-6227
> Project: HBase
> Issue Type: Bug
> Components: master
> Reporter: chunhui shen
> Assignee: chunhui shen
> Attachments: HBASE-6227.patch
>
>
> In AssignmentManager#processDeadServersAndRegionsInTransition, if
> servershutdownhandler is processing and master consider it cluster startup,
> master will assign all user regions, however, servershutdownhandler has not
> completed splitting logs.
> Detail process as the following( 1 master, 1 regionserver):
> 1.All the servers are killed
> 2.master start up, regionserver's zk node exists, so master will record it
> 3.master won't split any logs
> 4.regionserver start up, and master assign root and meta
> 5.the old regionserver is in SSH now, when rebuild user region, no region is
> added in master's region list
> 6.master consider it is cluster up, so it will assign all user regions
> 7.However, some region's data is in logs which are splittting by SSH
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