Shuaifeng Zhou created HBASE-14407:
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Summary: NotServingRegion: hbase region closed forever
Key: HBASE-14407
URL: https://issues.apache.org/jira/browse/HBASE-14407
Project: HBase
Issue Type: Bug
Reporter: Shuaifeng Zhou
Assignee: Shuaifeng Zhou
Fix For: 1.1.2, 0.98.10
I found a situation may cause region closed forever, and this situation
happend usually on my cluster, version is 0.98.10, but 1.1.2 also have the
problem:
1, master send region open to regionserver
2, rs open a handler do openregion
3, rs return resopnse to master
3, master not received the response, or timeout, send open region again
4, rs already opened the region
5, master processAlreadyOpenedRegion, update regionstate open in master
memory
6, master received zk message region opened(for some reason late, eg: net
work), and triger update regionstate open, but find that region already opened,
ERROR!
7, master send close region, and region be closed forever.
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