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https://issues.apache.org/jira/browse/HBASE-6391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13414968#comment-13414968
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rajeshbabu commented on HBASE-6391:
-----------------------------------

@zhou
bq. If there exists enabling state in zk and restart the whole cluster, it will 
be considered as a failover, will this slow down the startup of master?
Yes you are correct. Your suggestion also valid.
I will identify the pattern to check whether it is clean cluster startup or 
failover and come up with updated patch. I will upload latest patch in 
HBASE-6317.

                
> Master restart when enabling table will lead to region assignned twice
> ----------------------------------------------------------------------
>
>                 Key: HBASE-6391
>                 URL: https://issues.apache.org/jira/browse/HBASE-6391
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.94.0
>            Reporter: zhou wenjian
>             Fix For: 0.94.2
>
>
> The Scenario can be reproduce below.
> Enabling an table, some region is online on regionserver,some are still being 
> processed.
> And restart the master.
> when master failover:
>         // Region is being served and on an active server
>         // add only if region not in disabled and enabling table
>         if (false == checkIfRegionBelongsToDisabled(regionInfo)
>             && false == checkIfRegionsBelongsToEnabling(regionInfo)) {
>           regions.put(regionInfo, regionLocation);
>           addToServers(regionLocation, regionInfo);
>         }
> the opened region will not add to the Regions in master.
> and in the following recoverTableInEnablingState,the region will be assigned 
> again.
> that will lead to the cluster inconsistent

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