Prasanth J created HIVE-5849:
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Summary: Improve the stats of operators based on heuristics in the
absence of any column statistics
Key: HIVE-5849
URL: https://issues.apache.org/jira/browse/HIVE-5849
Project: Hive
Issue Type: Sub-task
Reporter: Prasanth J
Assignee: Prasanth J
In the absence of any column statistics, operators will simply use the
statistics from its parents. It is useful to apply some heuristics to update
basic statistics (number of rows and data size) in the absence of any column
statistics. This will be worst case scenario.
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