[DRILL-3742] Improve classpath scanning to reduce the time it takes

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.3.0
• Flags: Patch
• External issue URL: https://github.com/apache/drill/pull/148/files
• Assignee: Julien Le Dem
• Reporter: Julien Le Dem
• Created: 05/Sep/15 01:00
• Updated: 26/Oct/15 17:45
• Resolved: 26/Oct/15 17:45

Description

classpath scanning and function registry take a long time (seconds every time).
We'd want to avoid loading the classes (use bytecode inspection instead) and have a build time cache to avoid doing the scanning at startup.