[HIVE-16724] increase session timeout for LLAP ZK token manager

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.4.0, 3.0.0
• Labels: TODOC2.4
• Assignee: Sergey Shelukhin
• Reporter: Sergey Shelukhin
• Created: 19/May/17 21:58
• Updated: 22/May/18 23:58
• Resolved: 20/May/17 01:18

Description

ZKDTSM in Hadoop uses 10sec by default; looking at some logs from a flaky ZK instance, I see that most other clients have 40-90sec. timeouts.
ZKDTSM uses sharedvalue from curator; that instantly fails on session expiration, without any retries. For now we are going to increase the session timeout to minimize problems due to that.