[ https://issues.apache.org/jira/browse/HBASE-7092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13491786#comment-13491786 ]
stack commented on HBASE-7092: ------------------------------ I added a note to the MSLAB section that lots of regions could cause you OOME (MSLAB is on since 0.92, not 0.96 as I said above) > 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 > Priority: Blocker > 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[] -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira