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Message-ID: <30240494.12661274918137462.JavaMail.jira@thor>
Date: Wed, 26 May 2010 19:55:37 -0400 (EDT)
From: "Jean-Daniel Cryans (JIRA)" <jira@apache.org>
To: hbase-issues@hadoop.apache.org
Subject: [jira] Assigned: (HBASE-1868) Spew about rebalancing but none
 done....
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     [ https://issues.apache.org/jira/browse/HBASE-1868?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jean-Daniel Cryans reassigned HBASE-1868:
-----------------------------------------

    Assignee: stack

> Spew about rebalancing but none done....
> ----------------------------------------
>
>                 Key: HBASE-1868
>                 URL: https://issues.apache.org/jira/browse/HBASE-1868
>             Project: HBase
>          Issue Type: Bug
>         Environment: 0.20.0 RC2
>            Reporter: stack
>            Assignee: stack
>             Fix For: 0.20.1
>
>         Attachments: 1868.patch
>
>
> I'm seeing loads of this in logs:
> {code}
> 2009-09-24 21:27:22,130 DEBUG org.apache.hadoop.hbase.master.RegionManager: Server XX.XX.XX.100,20020,1253219583523 will be unloaded for balance. Server load: 5 avg: 3.78, regions can be moved: 4
> {code}
> Its like balancer is coming up w/ wrong answer to question... I don't see subsequent stuff going on... It does it over and over for hours.
> Then a split comes in and its seems to shake things up.  I see it do a bunch of assigning.
> {code}
> 2009-09-24 21:41:02,784 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_SPLIT: locations,,1253657949707: Daughters; locations,,1253
> 828460677, locations,http:\x2F\x2Fen.wikipedia.org\x2Fwiki\x2FLarry_Lucchino,1253828460677 from aa0-009-2.u.powerset.com,20020,1253219584971; 1 of 3
> 2009-09-24 21:41:02,784 DEBUG org.apache.hadoop.hbase.master.RegionManager: Assigning for address: XX.XX.XX.6:20020, startcode: 1253219584971, load: (reque
> sts=5213, regions=3, usedHeap=114, maxHeap=2031): total nregions to assign=2, nregions to reach balance=4, isMetaAssign=false
> 2009-09-24 21:41:02,820 DEBUG org.apache.hadoop.hbase.master.RegionManager: Assigning for address: XX.XX.XX.96:20020, startcode: 1253219584175, load: (requ
> ests=12, regions=4, usedHeap=404, maxHeap=2031): total nregions to assign=2, nregions to reach balance=4, isMetaAssign=false
> ...
> {code}
> Then back to the 'will be unloaded'... message.
> A new split comes in and then the assigning gets triggered again... a few regions are opened but not enough.
> Eventually it goes back to 'normal' (average load went to 3.85 from 3.8?)

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