[BOOKKEEPER-1050] Cache journalFormatVersionToWrite when starting Journal

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.5.0
• Assignee: Matteo Merli
• Reporter: Matteo Merli
• Created: 09/May/17 17:16
• Updated: 10/May/17 14:02
• Resolved: 09/May/17 20:26

Description

Reading the journal version format from ServiceConfiguration each time is inefficient.

ServiceConfiguration is based on Java properties which is based on a String to object hashtable. Each read implies acquiring a mutex and converting from object to int.

Issue Links

• links to: GitHub Pull Request #140