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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3315) Add debug output for when balancer makes bad balance
Date Tue, 07 Dec 2010 01:00:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12968526#action_12968526
] 

stack commented on HBASE-3315:
------------------------------

Here's a bad balance Jon: 
2010-12-07 00:49:26,047 WARN org.apache.hadoop.hbase.master.LoadBalancer: Input sv2borg187,60020,1291682134874
1538, sv2borg183,60020,1291682134478 1392, sv2borg181,60020,1291682134477 1561, sv2borg189,60020,1291682134476
1557, sv2borg182,60020,1291682134474 1535, sv2borg185,60020,1291682134481 1553, sv2borg188,60020,1291682134874
1385, sv2borg186,60020,1291682134480 1542, sv2borg184,60020,1291682134480 1619

> Add debug output for when balancer makes bad balance
> ----------------------------------------------------
>
>                 Key: HBASE-3315
>                 URL: https://issues.apache.org/jira/browse/HBASE-3315
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>            Assignee: stack
>             Fix For: 0.90.0
>
>
> Balancer had assertions at end of the balanceCluster method.  These assertions trigger
on occasion -- just did for me and did previously for j-d -- only there's no data to analyze
when it fails.  Add logging data on balancer input and summary.

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