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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4136) Load balancer may not have a chance to run due to RegionsInTransition being non-empty
Date Mon, 25 Jul 2011 03:49:10 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4136?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu updated HBASE-4136:
--------------------------

    Affects Version/s: 0.90.3

> Load balancer may not have a chance to run due to RegionsInTransition being non-empty
> -------------------------------------------------------------------------------------
>
>                 Key: HBASE-4136
>                 URL: https://issues.apache.org/jira/browse/HBASE-4136
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.3
>            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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