[HIVE-4628] HS2 sessionmanager should synchronize the call to insert/remove session objects from session hash map

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Not A Problem
• Affects Version/s: 0.11.0
• Component/s: HiveServer2
• Assignee: Shreepadma Venugopalan
• Reporter: Shreepadma Venugopalan
• Created: 29/May/13 22:04
• Updated: 30/May/13 17:30
• Resolved: 30/May/13 17:29

Description

HS2 SessionManager maintains a hashmap of active HS2 sessions. However, insert and deletes to this hashmap is not synchronized. A consequence of this is a racing thread could overwrite a valid session object in the hashmap and we could end up losing a session!