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https://issues.apache.org/jira/browse/DERBY-1781?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Myrna van Lunteren resolved DERBY-1781.
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Resolution: Fixed
Fix Version/s: 10.2.1.6
Thx for all the research. I think this can be resolved now marking just fixed
in 10.2.1.6. No need to find the exact revision, I think.
> Process handles appear to be leaking in queries using an IN clause during
> concurrent DB access
> ----------------------------------------------------------------------------------------------
>
> Key: DERBY-1781
> URL: https://issues.apache.org/jira/browse/DERBY-1781
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.1.3.1
> Environment: Windows XP, Java 1.5.0_05
> Reporter: Mark Hellkamp
> Assignee: Thomas Nielsen
> Fix For: 10.2.1.6
>
> Attachments: SqlStressTest.java
>
>
> We are currently using Derby embedded in our web application running on
> Windows. When processing multiple concurrent requests we have noticed that
> the Java process handle count continues to increase until the machine becomes
> unresponsive. I was able to isolate the problem to Derby by running the
> database in network mode in another process. Further investigation showed
> that the problem could be reproduced using a select statement that has an IN
> clause with multiple entries on the primary key column. Spawning multiple
> threads running the same query causes the handle count to increase
> considerably on the Derby process. The problem occurs in version 10.1.3.1 and
> 10.2.1.1 (even worse) in both embedded and network mode. The attached test
> program duplicates the problem. Start Derby in network mode (using
> startNetworkServer.bat) and run the enclosed test program. The handle count
> on the Derby process will increase and never go down short of restarting
> Derby. Using 10.2.1.1 the handle count for the Derby process goes somewhere
> between 1400-1500 with just two threads in my environment.
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