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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2016/10/11 18:38:21 UTC
[jira] [Assigned] (SYSTEMML-1030) Dataframe converters incorrectly
use positional access
[ https://issues.apache.org/jira/browse/SYSTEMML-1030?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matthias Boehm reassigned SYSTEMML-1030:
----------------------------------------
Assignee: Matthias Boehm
> 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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