[DRILL-3036] Mongo plugin doesn't pushdown filter with a project

• Type: Bug
• Status: Reviewable
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.9.0
• Component/s: Storage - MongoDB
• Assignee: Adam Gilmore
• Reporter: Adam Gilmore
• Created: 12/May/15 07:02
• Updated: 18/Apr/17 15:49

Description

Exacerbated by DRILL-2732, if a project exists between the scan and the filter, the current Mongo pushdown filter rule will not push the filter down into the scan.

As implemented in DRILL-1950 and for the partition prune optimizer rule, the pushdown filter should handle the above scenario (by implementing the rule for both "filter/scan" and "filter/project/scan" scenarios).