Zoltan Haindrich created HIVE-18140:
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Summary: Partitioned tables statistics can go wrong in basic stats
mixed case
Key: HIVE-18140
URL: https://issues.apache.org/jira/browse/HIVE-18140
Project: Hive
Issue Type: Sub-task
Reporter: Zoltan Haindrich
suppose the following scenario:
* part1 has basic stats {{RC=10,DS=1K}}
* all other partition has no basic stats (and a bunch of rows)
then
[this|https://github.com/apache/hive/blob/d9924ab3e285536f7e2cc15ecbea36a78c59c66d/ql/src/java/org/apache/hadoop/hive/ql/stats/StatsUtils.java#L378]
condition would be false; which in turn produces estimations for the whole
partitioned table: {{RC=10,DS=1K}}
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