Nishant Bangarwa created HIVE-20297:
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Summary: Column Level Stats for Druid Tables
Key: HIVE-20297
URL: https://issues.apache.org/jira/browse/HIVE-20297
Project: Hive
Issue Type: Improvement
Reporter: Nishant Bangarwa
Assignee: Nishant Bangarwa
This task is to have correct column level stats for druid in hive metastore.
- Stats like min/max/cardinality can be gathered using a Druid Segment Metadata
Query.
- Druid Query planning we need to ensure that the filters/Aggregations pushed
inside DruidQuery are accounted for.
Having correct stats would also help optimizer ensure proper join orderings
when doing federated complex joins between hive/druid.
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