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https://issues.apache.org/jira/browse/HBASE-7092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490810#comment-13490810
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Jimmy Xiang commented on HBASE-7092:
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I got the same issue with jdk 1.6. So it is not a jdk issue. Uploaded the
head-dump image shows it may related to onlineregions.
> RegionServer OOM related to onlineregions
> -----------------------------------------
>
> Key: HBASE-7092
> URL: https://issues.apache.org/jira/browse/HBASE-7092
> Project: HBase
> Issue Type: Bug
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Fix For: 0.96.0
>
> Attachments: heap-dump.png
>
>
> One instance of "java.util.concurrent.ConcurrentHashMap" loaded by "<system
> class loader>" occupies 3,972,154,848 (92.88%) bytes. The instance is
> referenced by org.apache.hadoop.hbase.regionserver.HRegionServer @
> 0x7038d3798 , loaded by "sun.misc.Launcher$AppClassLoader @ 0x703994668". The
> memory is accumulated in one instance of
> "java.util.concurrent.ConcurrentHashMap$Segment[]" loaded by "<system class
> loader>".
> Keywords
> sun.misc.Launcher$AppClassLoader @ 0x703994668
> java.util.concurrent.ConcurrentHashMap
> java.util.concurrent.ConcurrentHashMap$Segment[]
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