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Commit 22226fcc authored by NarineK's avatar NarineK Committed by Davies Liu
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[SPARK-15110] [SPARKR] Implement repartitionByColumn for SparkR DataFrames 

## What changes were proposed in this pull request?

Implement repartitionByColumn on DataFrame.
This will allow us to run R functions on each partition identified by column groups with dapply() method.

## How was this patch tested?

Unit tests

Author: NarineK <narine.kokhlikyan@us.ibm.com>

Closes #12887 from NarineK/repartitionByColumns.
parent ac12b35d
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