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From "Jeffrey Zhong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-10085) Some regions aren't re-assigned after a mater restarts
Date Thu, 05 Dec 2013 01:57:37 GMT

     [ https://issues.apache.org/jira/browse/HBASE-10085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jeffrey Zhong updated HBASE-10085:
----------------------------------

    Status: Patch Available  (was: Open)

> Some regions aren't re-assigned after a mater restarts
> ------------------------------------------------------
>
>                 Key: HBASE-10085
>                 URL: https://issues.apache.org/jira/browse/HBASE-10085
>             Project: HBase
>          Issue Type: Bug
>          Components: Region Assignment
>    Affects Versions: 0.96.1
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>             Fix For: 0.98.0, 0.96.1
>
>         Attachments: hbase-10085.patch
>
>
> We see this issue happened in a cluster restart:
> 1) when shutdown a cluster, some regions are in offline state because no Region servers
are available(stop RS and then Master)
> 2) When the cluster restarts, the offlined regions are forced to be offline again and
SSH skip re-assigning them by function AM.processServerShutdown as shown below.
> {code}
> 2013-12-03 10:41:56,686 INFO  [master:h2-ubuntu12-sec-1386048659-hbase-8:60000] master.AssignmentManager:
Processing 873dbd8c269f44d0aefb0f66c5b53537 in state: M_ZK_REGION_OFFLINE
> 2013-12-03 10:41:56,686 DEBUG [master:h2-ubuntu12-sec-1386048659-hbase-8:60000] master.AssignmentManager:
RIT 873dbd8c269f44d0aefb0f66c5b53537 in state=M_ZK_REGION_OFFLINE was on deadserver; forcing
offline
> ...
> 2013-12-03 10:41:56,739 DEBUG [AM.-pool1-t8] master.AssignmentManager: Force region state
offline {873dbd8c269f44d0aefb0f66c5b53537 state=OFFLINE, ts=1386067316737, server=h2-ubuntu12-sec-1386048659-hbase-6.cs1cloud.internal,60020,1386066968696}
> ...
> 2013-12-03 10:41:57,223 WARN  [MASTER_SERVER_OPERATIONS-h2-ubuntu12-sec-1386048659-hbase-8:60000-3]
master.RegionStates: THIS SHOULD NOT HAPPEN: unexpected {873dbd8c269f44d0aefb0f66c5b53537
state=OFFLINE, ts=1386067316737, server=h2-ubuntu12-sec-1386048659-hbase-6.cs1cloud.internal,60020,1386066968696}

> {code}



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