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ASF GitHub Bot commented on DRILL-6381: --------------------------------------- amansinha100 commented on issue #1466: DRILL-6381: Add support for index based planning and execution URL: https://github.com/apache/drill/pull/1466#issuecomment-426027322 @gparai , @HanumathRao I have addressed most of your code review comments. Working on @Ben-Zvi 's comment on JoinControl. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org > Add capability to do index based planning and execution > ------------------------------------------------------- > > Key: DRILL-6381 > URL: https://issues.apache.org/jira/browse/DRILL-6381 > Project: Apache Drill > Issue Type: New Feature > Components: Execution - Relational Operators, Query Planning & > Optimization > Reporter: Aman Sinha > Assignee: Aman Sinha > Priority: Major > Fix For: 1.15.0 > > > If the underlying data source supports indexes (primary and secondary > indexes), Drill should leverage those during planning and execution in order > to improve query performance. > On the planning side, Drill planner should be enhanced to provide an > abstraction layer which express the index metadata and statistics. Further, > a cost-based index selection is needed to decide which index(es) are > suitable. > On the execution side, appropriate operator enhancements would be needed to > handle different categories of indexes such as covering, non-covering > indexes, taking into consideration the index data may not be co-located with > the primary table, i.e a global index. -- This message was sent by Atlassian JIRA (v7.6.3#76005)