META region stuck in RS2ZK_REGION_OPENED state
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Key: HBASE-2758
URL: https://issues.apache.org/jira/browse/HBASE-2758
Project: HBase
Issue Type: Bug
Components: master, regionserver
Affects Versions: 0.21.0
Reporter: Todd Lipcon
Priority: Blocker
In cluster testing trunk, I ended up with a situation where META was unassigned
and no amount of restarting various pieces would fix it. On master startup, I
see:
2010-06-20 21:08:05,431 DEBUG org.apache.hadoop.hbase.master.BaseScanner:
Current assignment of .META.,,1.1028785192 is not valid; serverAddress=,
startCode=0 unknown.
2010-06-20 21:08:05,436 DEBUG
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper: While creating UNASSIGNED
region 1028785192 exists, state = RS2ZK_REGION_OPENED
2010-06-20 21:08:05,438 WARN
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper:
<monster01.sf.cloudera.com:/hbase,org.apache.hadoop.hbase.master.HMaster>Failed
to create ZNode /hbase/UNASSIGNED/1028785192 in ZooKeeper
org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode =
NodeExists for /hbase/UNASSIGNED/1028785192
2010-06-20 21:08:05,438 DEBUG org.apache.hadoop.hbase.master.RegionManager:
Created UNASSIGNED zNode .META.,,1.1028785192 in state M2ZK_REGION_OFFLINE
then on the RS:
2010-06-20 21:08:05,899 ERROR
org.apache.hadoop.hbase.regionserver.RSZookeeperUpdater: ZNode
/hbase/UNASSIGNED/1028785192 is not in CLOSED/OFFLINE state (state =
RS2ZK_REGION_OPENED), will NOT open region.
2010-06-20 21:08:05,899 ERROR
org.apache.hadoop.hbase.regionserver.HRegionServer: Error opening
.META.,,1.1028785192
java.io.IOException: ZNode /hbase/UNASSIGNED/1028785192 is not in
CLOSED/OFFLINE state (state = RS2ZK_REGION_OPENED), will NOT open region.
and the region never opens
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