[DRILL-3022] Ensure sequential shutdown of Drillbits

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.0
• Fix Version/s: 1.0.0
• Component/s: Tools, Build & Test
• Assignee: Hanifi Gunes
• Reporter: Hanifi Gunes
• Created: 11/May/15 05:36
• Updated: 11/May/15 06:58
• Resolved: 11/May/15 06:58

Description

When we run multiple bits within a JVM, shutting down bits might cause a race condition due to concurrent access to static MetricRegistry instance. This causes ugly error messages show up in the terminal. The proposal is to serialize shutdown of each bit via use of a global lock.