[DRILL-7008] Drillbits: clear stale shutdown hook on close

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.15.0
• Fix Version/s: 1.16.0
• Component/s: Server
• Labels: ready-to-commit
• Assignee: Vladimir Sitnikov
• Reporter: Vladimir Sitnikov
• Reviewer: Arina Ielchiieva
• Created: 28/Jan/19 10:37
• Updated: 01/Feb/19 22:54
• Resolved: 01/Feb/19 22:54

Description

Drillbits#close should clear shutdown hook if one was installed.

Stale shutdown hooks cause memory leak.

Issue Links

• links to: GitHub Pull Request #1625
• links to: PR#1625