[ARROW-3694] [Java] Avoid superfluous string creation when logging level is disabled

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.11.1
• Fix Version/s: 0.12.0
• Component/s: Java
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/15858
• Assignee: Zhenyuan Zhao
• Reporter: Zhenyuan Zhao
• Created: 03/Nov/18 06:00
• Updated: 11/Jan/23 07:29
• Resolved: 03/Nov/18 10:04

Description

There are a few places where strings were unnecessarily created for logging purpose.

https://github.com/apache/arrow/blob/ed70f051bb0636d994f285c38503b992d08efa00/java/vector/src/main/java/org/apache/arrow/vector/ipc/message/ArrowRecordBatch.java#L75

For the above scenario in ArrowRecordBatch, roughly 2/3 of the total CPU was spent in string.format()

Issue Links

• links to: GitHub Pull Request #2894