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ASF GitHub Bot commented on DRILL-6381: --------------------------------------- amansinha100 opened a new pull request #1512: DRILL-6381: Add support for index based planning and execution URL: https://github.com/apache/drill/pull/1512 This PR is a replacement for the original PR https://github.com/apache/drill/pull/1466. Please see that PR for all review comments and resolutions. I have created this new PR after addressing review comments, doing a full rebase and resolving merge conflicts and squashing a subset of the commits. Pushing these to the original PR would have caused some comments to be lost, hence creating the new one. ---------------------------------------------------------------- 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 > Labels: ready-to-commit > 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)