[IMPALA-4531] In-predicate not pushed to Kudu scan node

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Kudu_Impala
• Fix Version/s: Impala 2.8.0
• Component/s: Backend
• Target Version: Kudu_Impala
• Assignee: Matthew Jacobs
• Reporter: Mostafa Mokhtar
• Created: 23/Nov/16 22:18
• Updated: 07/Dec/16 17:41
• Resolved: 07/Dec/16 17:41

Description

In-predicates are not pushed to Kudu scan node, it appears that Kudu client does support in-predicates.

Query

select count(*) from lineitem where l_orderkey in (1,2) and l_orderkey = 10

Plan

+----------------------------------------------------------+
| Explain String                                           |
+----------------------------------------------------------+
| Estimated Per-Host Requirements: Memory=10.00MB VCores=1 |
|                                                          |
| PLAN-ROOT SINK                                           |
| |                                                        |
| 03:AGGREGATE [FINALIZE]                                  |
| |  output: count:merge(*)                                |
| |                                                        |
| 02:EXCHANGE [UNPARTITIONED]                              |
| |                                                        |
| 01:AGGREGATE                                             |
| |  output: count(*)                                      |
| |                                                        |
| 00:SCAN KUDU [tpch_100_kudu.lineitem]                    |
|    predicates: l_orderkey IN (1, 2)                      |
|    kudu predicates: l_orderkey = 10                      |
+----------------------------------------------------------+