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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-7724) [0.94] Just OPENED regions are ignored by ServerShutdownHandler and go unassigned for ever
Date Thu, 31 Jan 2013 00:39:12 GMT
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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