[jira] [Commented] (MADLIB-1016) k-mean & decision Tree don't work because of array_agg in order by clause

["Rahul Iyer (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MADLIB-1016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15474264#comment-15474264 ] 

Rahul Iyer commented on MADLIB-1016:
------------------------------------

[~medart] In which version of Pivotal Greenplum are you seeing this error? 

> 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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