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https://issues.apache.org/jira/browse/IGNITE-3090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15288610#comment-15288610
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ASF GitHub Bot commented on IGNITE-3090:
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Github user tledkov-gridgain closed the pull request at:
https://github.com/apache/ignite/pull/712
> Memory leak in IgniteH2Indexing prepared statements cache
> ----------------------------------------------------------
>
> Key: IGNITE-3090
> URL: https://issues.apache.org/jira/browse/IGNITE-3090
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 1.5.0.final
> Reporter: Denis Magda
> Labels: community, important
> Fix For: 1.6
>
>
> IgniteH2Indexing caches prepared statements in {{stmtCache}} that uses
> Threads as keys. Under they high load when there are many Threads the cache
> can grow significantly. Plus if a Thread is terminated its prepared
> statements are not get cleaned introducing a memory leak.
> A special background Thread should be introduced that will iterate over
> {{stmCache}} performing the following:
> - cleaning records for terminated Threads;
> - cleaning records of the Threads that were not used for a long time. A
> special configuration parameter can be set.
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