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https://issues.apache.org/jira/browse/HBASE-6227?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13396455#comment-13396455
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chunhui shen commented on HBASE-6227:
-------------------------------------
@ram
If we do the following for the above problem you mentioned, is it enough?
{code}
if (actualDeadServers.contains(deadServer.getKey())) {
for (Pair<HRegionInfo, Result> deadRegion : deadServer.getValue()) {
nodes.remove(deadRegion.getFirst().getEncodedName());
}
continue;
}
{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.
> Let me describe it in more detail.
> Suppose there are two regionservers A1 and B1, A1 carried META and ROOT
> 1.master restart and completed assignRootAndMeta
> 2.A1 and B1 are both restarted, new regionservers are A2 and B2
> 3.SSH which processed for A1 completed assigning ROOT and META
> 4.master do rebuilding user regions and no regions added to master's region
> list
> 5.master consider it as a cluster startup, and assign all user regions
> 6.SSH which processed for B1 start to split B1's logs
> 7.All regions' data carried by B1 would loss.
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