[IMPALA-4859] Push down IS NULL / IS NOT NULL to Kudu

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Product Backlog
• Fix Version/s: Impala 2.9.0
• Component/s: Backend
• Labels: kudu ramp-up
• Assignee: Joe McDonnell
• Reporter: Todd Lipcon
• Created: 01/Feb/17 21:59
• Updated: 31/Mar/17 22:04
• Resolved: 31/Mar/17 22:04

Description

Kudu just committed support for IS NULL / IS NOT NULL predicate evaluation. Impala should identify these as pushable predicates and call the appropriate API when generating scan tokens.

Sub-Tasks

• Document perf improvement from IS [NOT] NULL pushdown to Kudu: Resolved