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Posted to derby-dev@db.apache.org by "Knut Anders Hatlen (JIRA)" <ji...@apache.org> on 2007/12/03 13:50:43 UTC
[jira] Commented: (DERBY-3198) Using setQueryTimeout will leak
sections
[ https://issues.apache.org/jira/browse/DERBY-3198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12547827 ]
Knut Anders Hatlen commented on DERBY-3198:
-------------------------------------------
Patch looks good to me. +1 to commit.
You might also consider closing the result set in the test, unless it's supposed to test that the section is freed on implicit close.
> Using setQueryTimeout will leak sections
> -----------------------------------------
>
> Key: DERBY-3198
> URL: https://issues.apache.org/jira/browse/DERBY-3198
> Project: Derby
> Issue Type: Bug
> Components: JDBC, Network Client
> Affects Versions: 10.3.1.4
> Reporter: Dyre Tjeldvoll
> Assignee: Dyre Tjeldvoll
> Attachments: derby-3198.v1.diff, derby-3198.v2.diff, derby-3198.v3.diff, repro.diff
>
>
> The implementation of setQueryTimeout relies on NetStatementReply.writeSetSpecialRegister() which will allocate a dynamic section when called. No reference to this Section object is kept, and so Section.free() never gets called on it. Executing the same statment repeatedly with a query timeout set results in the client driver throwing an exception because the number of Sections exceeding 32000.
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