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https://issues.apache.org/jira/browse/CALCITE-2301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16737897#comment-16737897
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Vladimir Sitnikov commented on CALCITE-2301:
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[~julianhyde], I've updated the code to use existing
\{{org.apache.calcite.DataContext.Variable#UTC_TIMESTAMP}} which should
designate "query start timestamp".
Testcase is not that trivial: HSQLDB does not have builtin {{sleep}} function.
I can add a test for PostgreSQL (it has pg_sleep), however I'm not that sure
running tests against PostgreSQL happens often.
> JDBC adapter: use query timeout from the top-level statement
> ------------------------------------------------------------
>
> Key: CALCITE-2301
> URL: https://issues.apache.org/jira/browse/CALCITE-2301
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.16.0
> Reporter: Fan Yang
> Assignee: Julian Hyde
> Priority: Minor
> Labels: pull-request-available
> Fix For: next
>
>
> It's not a good idea to have the magic number here. Also, databases may not
> get back within 10 second for various reasons (e.g., in the case of JDBC
> schema).
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