[HIVE-4209] Cache evaluation result of deterministic expression and reuse it

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: Query Processor
• Assignee: Navis Ryu
• Reporter: Navis Ryu
• Created: 21/Mar/13 05:25
• Updated: 04/Jul/14 06:30
• Resolved: 10/May/13 04:55

Description

For example,

select key from src where key + 1 > 100 AND key + 1 < 200 limit 3;

key + 1 need not to be evaluated twice.

Issue Links

• is related to: HIVE-7314 Wrong results of UDF when hive.cache.expr.evaluation is set