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https://issues.apache.org/jira/browse/HBASE-7092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13489908#comment-13489908
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stack commented on HBASE-7092:
------------------------------
You have a heap dump Jimmy that we could take a look at ? What jdk1.7 version?
> RegionServer OOM with jdk 1.7 related to ConcurrentHashMap class loader
> -----------------------------------------------------------------------
>
> Key: HBASE-7092
> URL: https://issues.apache.org/jira/browse/HBASE-7092
> Project: HBase
> Issue Type: Sub-task
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Fix For: 0.96.0
>
>
> 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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