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Date: Thu, 26 May 2011 03:59:47 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
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Subject: =?utf-8?Q?[jira]_[Resolved]_(HBASE-3906)_When_?=
 =?utf-8?Q?HMaster_is_running,there_are_a_lot_o?=
 =?utf-8?Q?f_RegionLoad_instances=EF=BC=88far_greater_t?=
 =?utf-8?Q?han_the_regions=EF=BC=89,it_has_risk_of_OOME.?=
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     [ https://issues.apache.org/jira/browse/HBASE-3906?page=3Dcom.atlassia=
n.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HBASE-3906.
--------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

Committed to branch (Doesn't make sense on TRUNK).  Thanks for the patch Ji=
an.

> When HMaster is running,there are a lot of RegionLoad instances=EF=BC=88f=
ar greater than the regions=EF=BC=89,it has risk of OOME.
> -------------------------------------------------------------------------=
-----------------------------------------
>
>                 Key: HBASE-3906
>                 URL: https://issues.apache.org/jira/browse/HBASE-3906
>             Project: HBase
>          Issue Type: Improvement
>          Components: master
>    Affects Versions: 0.90.2, 0.90.3
>         Environment: 1 hmaster,4 regionserver,about 100,000 regions.
>            Reporter: jian zhang
>             Fix For: 0.90.4
>
>         Attachments: HBASE-3906.patch, HBASE-3906.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> 1=E3=80=81Start hbase cluster;
> 2=E3=80=81After hmaster finish regions assignement,use jmap to dump the m=
emory of hmaster;
> 3=E3=80=81Use MAT to analyse the dump file,there are too many RegionLoad =
instances,and these instances occupy more than 3G memory;

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