Load balancer may not have a chance to run due to RegionsInTransition being
non-empty
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Key: HBASE-4136
URL: https://issues.apache.org/jira/browse/HBASE-4136
Project: HBase
Issue Type: Bug
Reporter: Ted Yu
I observed in our staging cluster that load balancer didn't run for a long
period of time.
I saw the following in master log:
{code}
2011-07-24 15:56:32,333 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
running balancer because 2 region(s) in transition:
{4e7416833e3bbd6a8ade26f6986529bf=TABLE-1311419946465,E'\xFD\xDDu\xC3\x894\xF4$\xC0K\xA3!\x82\xB9\xD0\x7F|>\xAC\xDA81\xB6\x92\xED\xA9\x9C\xA6^\xF4,1311419961631.4e7416833e3bbd6a8ade26f6986529bf.
state=PENDING_CLOSE, ts=...
{code}
This means we need to find a better way of permitting one balance run at a
time. In HMaster.balance():
{code}
if (this.assignmentManager.isRegionsInTransition()) {
{code}
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