stack created HBASE-7724:
----------------------------
Summary: [0.94] Just OPENED regions are ignored by
ServerShutdownHandler and go unassigned for ever
Key: HBASE-7724
URL: https://issues.apache.org/jira/browse/HBASE-7724
Project: HBase
Issue Type: Bug
Components: Region Assignment
Reporter: stack
Visiting a user today, I came across following interesting case (0.94.2 HBase).
A server was added to cluster. It was assigned regions by the balancer. A
bunch opened on the regionserver and just after the open, the regionserver was
manually shutdown. There was a lag processing the zk region open events in the
master (because clean shutdown, there was no zk activity when the regions were
closed on the shutdown regionserver). Processing the server shutdown, we do
this for a good few of the regions that had just been opened on the
regionserver:
2013-01-30 02:41:19,917 INFO
org.apache.hadoop.hbase.master.handler.ServerShutdownHandler: Skip assigning
region
OBFUSCATED_TABLE,OBFUSCATED_STARTROW,1344723216908.55e9cb551edeea0b52bb91af7c2de199.
state=OPEN, ts=1359513674715, server=XX.XX.18.40,10304,1359513445136
Seems like outright bug that'd we'd skip a region that is in transition that is
in the OPEN state.
More detail to follow.
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