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https://issues.apache.org/jira/browse/METAMODEL-1093?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dennis Du Krøger reassigned METAMODEL-1093:
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Assignee: Dennis Du Krøger
> JDBC CompiledQuery ResultSets not closed properly
> -------------------------------------------------
>
> Key: METAMODEL-1093
> URL: https://issues.apache.org/jira/browse/METAMODEL-1093
> Project: Apache MetaModel
> Issue Type: Bug
> Reporter: Dennis Du Krøger
> Assignee: Dennis Du Krøger
>
> When running compiled queries, the JdbcResultSet only returns the lease on
> the query, it doesn't close the result set.
> For most JDBC drivers, that isn't really an issue, as they can easily handle
> connections with multiple open result sets. However, the MySQL JDBC sometimes
> uses streaming result sets (to save memory), of which only one can be open at
> a time.
> I almost have a PR ready, but I'm having a hard time making any kind of test
> that makes sense: When I make a simple test, the driver seems to close the
> resultset automatically right after execution, but that is not what we see in
> DataCleaner, and I'm not really sure why.
> I think I'll post it anyway, as it is rather large (I also tried to avoid
> repeats by making sure that the JdbcDataContext only handles the connection,
> and the rest is handled by try-with-resources as far as possible), so an
> early review would be nice.
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