[AMBARI-12698] Update the stack by stopping and starting services in an orchestrated fashion

• Type: Epic
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.3.0
• Component/s: ambari-server
• Labels: branch:branch-dev-stop-all-upgrade
• Epic Name: Stop-and-Start Upgrade of the Stack
• Assignee: Alejandro Fernandez
• Reporter: Alejandro Fernandez
• Created: 10/Aug/15 20:31
• Updated: 11/Jul/16 18:17
• Resolved: 11/Jul/16 18:17

Description

Ambari needs to provide an option to upgrade the stack that is much faster, by taking downtime. Instead of rolling restarts, this will stop all services, and start them one at a time, with all hosts starting in parallel/batches.

Benefits:

• Relaxes requirements since NameNode HA is not needed
• Faster since,
  • Can upgrade an entire component by parallelizing across hosts. E.g., all ZK servers at once
  • Parallelize across components. E.g., Falcon Server and Storm Nimbus servers in parallel