[
https://issues.apache.org/jira/browse/TAJO-838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14269251#comment-14269251
]
ASF GitHub Bot commented on TAJO-838:
-------------------------------------
Github user hyunsik commented on the pull request:
https://github.com/apache/tajo/pull/231#issuecomment-69170263
+1
It seems to be ready to be committed to index_support branch. Even through
the test results in two failures, I don't think that they are not related to
your patch. They are related to some blocker issues TAJO-1282 and TAJO-1278.
They will be resolved in other Jiras.
> Improve query planner to utilize index
> --------------------------------------
>
> Key: TAJO-838
> URL: https://issues.apache.org/jira/browse/TAJO-838
> Project: Tajo
> Issue Type: Sub-task
> Components: planner/optimizer
> Reporter: Jihoon Son
> Assignee: Jihoon Son
> Priority: Minor
>
> 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
(v6.3.4#6332)
