[KAFKA-4289] CPU wasted on reflection calls initializing short-lived loggers

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.10.0.1
• Fix Version/s: 0.10.2.0
• Assignee: Radai Rosenblatt
• Reporter: Radai Rosenblatt
• Created: 11/Oct/16 00:20
• Updated: 12/Oct/16 12:13
• Resolved: 12/Oct/16 12:11

Description

an internal profiling run at linkedin found ~5% of the CPU time consumed by `sun.reflect.Reflection.getCallerClass()`.

digging into the stack trace shows its from initializing short lived logger objects in `FileMessageSet` and `RequestChannel.Request`

Issue Links

• links to: GitHub Pull Request #2006