Thomas Rebele created HIVE-29826:
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Summary: Different kinds of sketches for histogram statistics
Key: HIVE-29826
URL: https://issues.apache.org/jira/browse/HIVE-29826
Project: Hive
Issue Type: New Feature
Reporter: Thomas Rebele
Currently Hive uses the KLL sketch for storing histograms. The KLL sketch has
shortcomings related to the algorithm (HIVE-29365) and the implementation of
the datasketches library (HIVE-29334).
Hive should provide a way to use different kinds of sketches (e.g., t-digest).
Preferably, the kind of histogram sketch can be configured globally, for a
table or an individual column.
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