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https://issues.apache.org/jira/browse/MADLIB-1208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16371961#comment-16371961
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Nandish Jayaram commented on MADLIB-1208:
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>From an initial look, this seems to be a no-op.
The modules for which we started supporting grouping in recent releases are:
Elastic Net, PageRank, and SSSP. The graph modules don't have a predict
function as such, and the change to elastic net was made in 1.10 release. With
1.14 coming up, I don't think we are going to support 1.10 anyway.
Will explore this a bit more before closing it as no-op.
> Check that grouping column is optional for predict functions in all modules
> ---------------------------------------------------------------------------
>
> Key: MADLIB-1208
> URL: https://issues.apache.org/jira/browse/MADLIB-1208
> Project: Apache MADlib
> Issue Type: Bug
> Components: All Modules
> Reporter: Frank McQuillan
> Priority: Minor
> Fix For: v1.14
>
>
> Follow on from: https://issues.apache.org/jira/browse/MADLIB-1207
> Check all predict functions to ensure that the grouping column is optional.
> This is needed because grouping is often added in a later release and if the
> predict function makes it mandatory, then you can't use your models trained
> before you upgraded.
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