Github user viirya commented on the issue:
https://github.com/apache/spark/pull/17819
@MLnick I've done a benchmark using the test dataset provided in JIRA
SPARK-20392 (blockbuster.csv).
The ML pipeline includes 2 `StringIndexer`s and 1 `MultipleBucketizer` or
137 `Bucketizer`s to bin 137 input columns with the same splits.
MultipleBucketizer: 3352 ms
Bucketizer: 51512 ms
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