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https://issues.apache.org/jira/browse/SYSTEMML-2369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-2369.
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Resolution: Fixed
Assignee: Matthias Boehm
Fix Version/s: SystemML 1.2
> Incorrect nnz runtime propagation on codegen spark cell ops w/o agg
> -------------------------------------------------------------------
>
> Key: SYSTEMML-2369
> URL: https://issues.apache.org/jira/browse/SYSTEMML-2369
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Priority: Major
> Fix For: SystemML 1.2
>
>
> The recent codegen compiler modification in SYSTEMML-2134 revealed a hidden
> issue where spark codegen cell operations without aggregation wrongly
> propagated the number of non-zeros of the main input into the output. This
> can lead to incorrect results if the main input is empty but the cell
> operation is sparse-unsafe.
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