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https://issues.apache.org/jira/browse/SYSTEMML-1842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-1842.
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> Compression decision lost after recompilation or codegen
> --------------------------------------------------------
>
> Key: SYSTEMML-1842
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1842
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Fix For: SystemML 1.0
>
>
> Even with forced compression (compressed.linalg=true), compression is
> currently not applied if the respective HOP DAG is recompiled or subject to
> code generation. The root cause is an incomplete deep copy of the HOP DAG
> which loses the compression flag.
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