[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3769) Enabling jmx statistics cause OOM
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http://opensource.atlassian.com/projects/hibernate/browse/HHH-3769?page=c...
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Josh Moore commented on HHH-3769:
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Still present in 3.5.6. Primarily an issue when queries are generated by users via string
formatting. Since our server provides the HQL interface directly to users, a relatively
small number of calls (I did it with 20K calls of 10K bytes) brought down the server.
Enabling jmx statistics cause OOM
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Key: HHH-3769
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3769
Project: Hibernate Core
Issue Type: Bug
Affects Versions: 3.2.0.ga
Reporter: Sid
It looks like when org.hibernate.jmx.StatisticsService.statisticsEnabled=true all query
strings get logged to org.hibernate.stat.StatisticsImpl.queryStatistics.
There is a clear method in org.hibernate.stat.StatisticsImpl that reset all statistics
but i don't see this method being called other than when some one calls
org.hibernate.jmx.StatisticsService.clear()
As queryStatistics is a HasMap this will causes OOM.
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