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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3221) Race between splitting and disabling
Date Thu, 11 Nov 2010 00:57:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12930873#action_12930873
] 

Jean-Daniel Cryans commented on HBASE-3221:
-------------------------------------------

For the record, this kind of stuff was impossible in the old master. Really exciting that
it's finally fixed!

> Race between splitting and disabling
> ------------------------------------
>
>                 Key: HBASE-3221
>                 URL: https://issues.apache.org/jira/browse/HBASE-3221
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>            Priority: Critical
>             Fix For: 0.90.0
>
>         Attachments: HBASE-3221.patch
>
>
> There's a race when you disable a table, if one of the region servers started the split
before the call and it reports after the master scanned the .META. regions, then you're not
disabling the daughter regions. I see this in the master log:
> {noformat}
> 2010-11-10 15:29:35,990 INFO org.apache.hadoop.hbase.master.handler.DisableTableHandler:
Attemping to disable table TestTable
> 2010-11-10 15:29:35,996 INFO org.apache.hadoop.hbase.master.handler.DisableTableHandler:
Offlining 2 regions.
> ...
> 2010-11-10 15:29:39,014 INFO org.apache.hadoop.hbase.master.handler.DisableTableHandler:
Disabled table is done=true
> 2010-11-10 15:29:39,105 INFO org.apache.hadoop.hbase.master.ServerManager: Received REGION_SPLIT:
TestTable,,1289431761746.9de9305168be83098273e083f24ea5d8.:
>  Daughters; TestTable,,1289431775593.a08b127a61b89e268129aa022fd18ce1.,
>  TestTable,0001037720,1289431775593.4a5f831723ffbdb859d45510742d9926. from hbasedev,60020,1289431673756
> ...
> {noformat}

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