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https://issues.apache.org/jira/browse/SYSTEMML-2234?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-2234.
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Resolution: Fixed
Assignee: Matthias Boehm
Fix Version/s: SystemML 1.2
> Memory leak buffer pool due to missing variable cleanup
> -------------------------------------------------------
>
> Key: SYSTEMML-2234
> URL: https://issues.apache.org/jira/browse/SYSTEMML-2234
> Project: SystemML
> Issue Type: Task
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Priority: Blocker
> Fix For: SystemML 1.2
>
>
> There are scenarios where variables are not properly cleaned up before
> assigning new matrices to logical variable names. This missing cleanup leads
> to a memory leak in the buffer pool, which in turn leads to unnecessary
> evictions and missing cleanup of FS and HDFS files.
> After a closer investigation, this issue occurs for special cases of function
> calls that have a peculiar control flow structure that prevents rmvar
> instructions for certain intermediates and thus requires cleanup of these
> intermediates after the function call. Furthermore, a similar issue occurs
> for loops with dedicated update-in place variables.
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