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https://issues.apache.org/jira/browse/SYSTEMML-749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm resolved SYSTEMML-749.
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Resolution: Fixed
Fix Version/s: SystemML 0.11
> Failed nrow call after spark removeEmpty operation
> --------------------------------------------------
>
> Key: SYSTEMML-749
> URL: https://issues.apache.org/jira/browse/SYSTEMML-749
> Project: SystemML
> Issue Type: Bug
> Components: Runtime
> Affects Versions: SystemML 0.10
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Fix For: SystemML 0.11
>
>
> In the special case of removeEmpty over a completely empty input matrix, the
> spark removeEmpty instruction creates an invalid output of dimensions [0 x
> ncol(in)] or [nrow(in) x 0] which is not supported in SystemML. Accordingly,
> any subsequent operation would have undefined behavior; in case of meta data
> operations like nrow or ncol, this actually leads to an explicit error with
> the following message: "Invalid meta data returned by nrow: 0".
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