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Peter Somogyi resolved HBASE-3680. ---------------------------------- Resolution: Won't Fix > Publish more metrics about mslab > -------------------------------- > > Key: HBASE-3680 > URL: https://issues.apache.org/jira/browse/HBASE-3680 > Project: HBase > Issue Type: Improvement > Affects Versions: 0.90.1 > Reporter: Jean-Daniel Cryans > Priority: Major > Attachments: hbase-3680.txt, hbase-3680.txt > > > We have been using mslab on all our clusters for a while now and it seems it > tends to OOME or send us into GC loops of death a lot more than it used to. > For example, one RS with mslab enabled and 7GB of heap died out of OOME this > afternoon; it had .55GB in the block cache and 2.03GB in the memstores which > doesn't account for much... but it could be that because of mslab a lot of > space was lost in those incomplete 2MB blocks and without metrics we can't > really tell. Compactions were running at the time of the OOME and I see block > cache activity. The average load on that cluster is 531. > We should at least publish the total size of all those blocks and maybe even > take actions based on that (like force flushing). -- This message was sent by Atlassian JIRA (v7.6.3#76005)