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From "Dave Latham (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-10089) Metrics intern table names cause eventual permgen OOM in 0.94
Date Thu, 05 Dec 2013 19:31:36 GMT
Dave Latham created HBASE-10089:
-----------------------------------

             Summary: Metrics intern table names cause eventual permgen OOM in 0.94
                 Key: HBASE-10089
                 URL: https://issues.apache.org/jira/browse/HBASE-10089
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.94.14
            Reporter: Dave Latham
            Priority: Minor


As part of the metrics system introduced in HBASE-4768 there are two places that hbase uses
String interning ( SchemaConfigured and SchemaMetrics ).  This includes interning table names.
 We have long running environment where we run regular integration tests on our application
using hbase.  Those tests create and drop tables with new names regularly.  These leads to
filling up the permgen with interned table names.  Workaround is to periodically restart the
region servers.



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