Jeffrey Zhong created HBASE-10085:
-------------------------------------
Summary: 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: 0.96.0
Reporter: Jeffrey Zhong
Assignee: Jeffrey Zhong
Fix For: 0.98.0, 0.96.1
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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