[HIVE-1749] ExecMapper and ExecReducer: reduce function calls to l4j.isInfoEnabled()

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.7.0
• Component/s: Query Processor
• Hadoop Flags: Reviewed
• Assignee: Siying Dong
• Reporter: Siying Dong
• Created: 26/Oct/10 02:45
• Updated: 16/Dec/11 23:59
• Resolved: 26/Oct/10 18:02

Description

Calling l4j.isInfoEnabled() is more expensive than we thought. By eliminating this function call, we can save 1% - 3% CPU time, according to the profiliing.