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Posted to dev@hbase.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2010/04/23 02:39:50 UTC
[jira] Created: (HBASE-2482) regions in transition do not get
reassigned by master when RS crashes
regions in transition do not get reassigned by master when RS crashes
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Key: HBASE-2482
URL: https://issues.apache.org/jira/browse/HBASE-2482
Project: Hadoop HBase
Issue Type: Bug
Components: master
Affects Versions: 0.20.5
Reporter: Todd Lipcon
Priority: Critical
Very similar to HBASE-1928, but for the general case (not just ROOT/META):
If a region is in transition on a RS when the RS crashes, the master does not remove it from regionsInTransition when processing the RS shutdown. This is fairly easy to trigger by bringing up a RS and kill -9ing it just as it starts to get regions assigned. Those regions will get permanently lost since they're stuck in regionsInTransition and thus don't get assigned by the metascanner.
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[jira] Resolved: (HBASE-2482) regions in transition do not get
reassigned by master when RS crashes
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-2482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack resolved HBASE-2482.
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Hadoop Flags: [Reviewed]
Resolution: Fixed
Applied branch and trunk. Thanks for the patch Todd.
> regions in transition do not get reassigned by master when RS crashes
> ---------------------------------------------------------------------
>
> Key: HBASE-2482
> URL: https://issues.apache.org/jira/browse/HBASE-2482
> Project: Hadoop HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.20.5
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Blocker
> Fix For: 0.20.5, 0.21.0
>
> Attachments: 2482-unittest.txt, 2482-v3-combined-patch.txt, hbase-2482.txt
>
>
> Very similar to HBASE-1928, but for the general case (not just ROOT/META):
> If a region is in transition on a RS when the RS crashes, the master does not remove it from regionsInTransition when processing the RS shutdown. This is fairly easy to trigger by bringing up a RS and kill -9ing it just as it starts to get regions assigned. Those regions will get permanently lost since they're stuck in regionsInTransition and thus don't get assigned by the metascanner.
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