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Posted to dev@hive.apache.org by "Zoltan Haindrich (JIRA)" <ji...@apache.org> on 2018/06/26 13:55:00 UTC

[jira] [Created] (HIVE-19995) Aggregate row traffic for acid tables

Zoltan Haindrich created HIVE-19995:
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             Summary: Aggregate row traffic for acid tables
                 Key: HIVE-19995
                 URL: https://issues.apache.org/jira/browse/HIVE-19995
             Project: Hive
          Issue Type: Sub-task
          Components: Statistics
            Reporter: Zoltan Haindrich
            Assignee: Zoltan Haindrich


for transactional tables we store basic stats in case of explicit analyze/rewrite; but doesn't do anything in other cases....which may even lead to plans which oom...

It would be better to aggregate the total row traffic...because that is already available; so that operator tree estimations could work with a real upper bound of the row numbers.



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