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https://issues.apache.org/jira/browse/DATAFU-171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17634394#comment-17634394
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Eyal Allweil commented on DATAFU-171:
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If this can be done in a backwards-compatible way, we'll also add it to
upcoming release 1.7.0.
> dedupWithCombiner to support Cols list in the order / group by params
> ---------------------------------------------------------------------
>
> Key: DATAFU-171
> URL: https://issues.apache.org/jira/browse/DATAFU-171
> Project: DataFu
> Issue Type: Improvement
> Reporter: Shaked Aharon
> Priority: Minor
>
> Currently, dedupWithCombiner only support a single column as its groupBy /
> orderBy keys. you can still leverage multiple keys, but you will need to add
> them as column with some expression to unify the columns.
> I would suggest adding support of multiple columns in the function itself
> without having to modify the df prior to that
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