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https://issues.apache.org/jira/browse/SYSTEMML-1030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm closed SYSTEMML-1030.
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> Dataframe converters incorrectly use positional access
> ------------------------------------------------------
>
> Key: SYSTEMML-1030
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1030
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
> Assignee: Matthias Boehm
> Fix For: SystemML 0.11
>
>
> Both our dataframe-matrix and dataframe-frame converters assume positional
> access of the __INDEX column. This is incorrect as, for example, a
> serialization into json and subsequent deserialization loses this order
> (i.e., sorts by column name). This is a bug because our converters cannot
> even read data frames produced by SystemML in a previous script.
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