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https://issues.apache.org/jira/browse/HBASE-3906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13037011#comment-13037011
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stack commented on HBASE-3906:
------------------------------

@Ted I think the patch is for branch only. It has the problem.  I don't believe 
TRUNK does.

@Jian This should work though its ugly; i.e. refreshing an HServerInfo instance 
(Do we need to keep load in the Map of regions?  What about clearing the load 
from the HSI we add to the Map of regions to HSI?  Would that work?  Or is this 
Map used balancing?).  Does your patch work for you?  Any issues w/ the new 
synchronize blocks?

> When HMaster is running,there are a lot of RegionLoad instances(far greater 
> than the regions),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
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> 1、Start hbase cluster;
> 2、After hmaster finish regions assignement,use jmap to dump the memory of 
> hmaster;
> 3、Use MAT to analyse the dump file,there are too many RegionLoad 
> instances,and these instances occupy more than 3G memory;

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