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Commit 415d0a85 authored by Cheng Lian's avatar Cheng Lian Committed by Reynold Xin
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[SPARK-12818][SQL] Specialized integral and string types for Count-min Sketch 

This PR is a follow-up of #10911. It adds specialized update methods for `CountMinSketch` so that we can avoid doing internal/external row format conversion in `DataFrame.countMinSketch()`.

Author: Cheng Lian <lian@databricks.com>

Closes #10968 from liancheng/cms-specialized.
parent c2204436
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