Gopal V created HIVE-11573:
------------------------------
Summary: PointLookupOptimizer can be pessimistic at a low nDV
Key: HIVE-11573
URL: https://issues.apache.org/jira/browse/HIVE-11573
Project: Hive
Issue Type: Bug
Affects Versions: 1.3.0, 2.0.0
Reporter: Gopal V
Assignee: Gopal V
Fix For: 1.3.0, 2.0.0
The PointLookupOptimizer can turn off some of the optimizations due to its use
of tuple IN() clauses.
Limit the application of the optimizer for very low nDV cases and extract the
sub-clause as a pre-condition during runtime, to trigger the simple column
predicate index lookups.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
