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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10089) Metrics intern table names cause eventual permgen OOM in 0.94
Date Fri, 13 Dec 2013 22:00:10 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13847954#comment-13847954
] 

Hudson commented on HBASE-10089:
--------------------------------

SUCCESS: Integrated in HBase-0.94-security #359 (See [https://builds.apache.org/job/HBase-0.94-security/359/])
HBASE-10089 Metrics intern table names cause eventual permgen OOM in 0.94 (tedyu: rev 1550809)
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/metrics/SchemaConfigured.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/metrics/SchemaMetrics.java


> 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: 0.94.0, 0.94.14
>            Reporter: Dave Latham
>            Assignee: Ted Yu
>            Priority: Minor
>             Fix For: 0.94.15
>
>         Attachments: 10089-0.94.txt
>
>
> 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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