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https://issues.apache.org/jira/browse/SYSTEMML-905?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm reassigned SYSTEMML-905:
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Assignee: Matthias Boehm
> Incorrect compressed unary aggregate w/ existing uc group
> ---------------------------------------------------------
>
> Key: SYSTEMML-905
> URL: https://issues.apache.org/jira/browse/SYSTEMML-905
> Project: SystemML
> Issue Type: Bug
> Components: Runtime
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Fix For: SystemML 0.11
>
>
> There is potential for incorrect unary aggregates over compressed matrices in
> the presence of a mix of OLE/RLE groups with existing UC group. Since we
> directly invoke uncompressed operations, the UC group computation resets the
> partial aggregates computed over predecessor groups.
> The fix should invoke uncompressed operations first before processing OLE and
> RLE groups.
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