Jihoon Son created TAJO-838:
-------------------------------
Summary: Improve query planner to utilize index
Key: TAJO-838
URL: https://issues.apache.org/jira/browse/TAJO-838
Project: Tajo
Issue Type: Task
Components: planner/optimizer
Reporter: Jihoon Son
Priority: Minor
Fix For: 0.9.0
Index can improve the query performance when the selectivity of query is high.
Thus, query planner should decide whether index is used or not for a given
query.
The selectivity can be guessed using statistics.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
