GitHub user hhbyyh opened a pull request:
https://github.com/apache/spark/pull/17912
[SPARK-20670] [ML] Simplify FPGrowth transform
## What changes were proposed in this pull request?
As suggested by Sean Owen in https://github.com/apache/spark/pull/17130,
the transform code in FPGrowthModel can be simplified.
As I tested on some public dataset http://fimi.ua.ac.be/data/, the
performance of the new transform code is even or better than the old
implementation.
## How was this patch tested?
Existing unit test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hhbyyh/spark fpgrowthTransform
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17912.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #17912
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