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Posted to issues@drill.apache.org by "Aman Sinha (JIRA)" <ji...@apache.org> on 2018/05/03 00:30:00 UTC
[jira] [Created] (DRILL-6381) Add capability to do index based
planning and execution
Aman Sinha created DRILL-6381:
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Summary: 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
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.
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