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https://issues.apache.org/jira/browse/DERBY-3198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12548655
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Knut Anders Hatlen commented on DERBY-3198:
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The new test case looks fine. You might consider if you want to change the
assert for i==16383 to i>=16383, since it's not technically an error if more
than 16383 statements can be open at the same time. Also, since the test now
uses the string "StatementJdbc30Test:client" twice, and won't add the new test
cases unless both occurrences have the same spelling, perhaps you should define
a constant to ensure their consistency.
> 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, derby-3198.v4.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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