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https://issues.apache.org/jira/browse/HBASE-10085?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeffrey Zhong updated HBASE-10085:
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Summary: Some regions aren't re-assigned after a cluster restarts (was:
Some regions aren't re-assigned after a master restarts)
> Some regions aren't re-assigned after a cluster 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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