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https://issues.apache.org/jira/browse/MADLIB-1016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15474424#comment-15474424
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medart commented on MADLIB-1016:
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Version pivotal greeplum v 4.3.9
> k-mean & decision Tree don't work because of array_agg in order by clause
> -------------------------------------------------------------------------
>
> Key: MADLIB-1016
> URL: https://issues.apache.org/jira/browse/MADLIB-1016
> Project: Apache MADlib
> Issue Type: Bug
> Components: Module: Array Ops
> Reporter: medart
>
> When we try to use k-mean function or decision tree the same error appear.
> ERROR: plpy.SPIError: ORDER BY specified, but array_agg is not an ordered
> aggregate function (plpython.c:4648)
> For information we use Madlib 1.9.1 with Pivotal Greenplum, and we use the
> example data as shown in the official documentatio.
> The regression work great nad we didint try all the algorithme yet, to see if
> the problem apprear in the other methods.
> Thank you for your help
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