[AMBARI-3677] Service state should accurately reflect state of host-components

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Assignee: Tom Beerbower
• Reporter: Tom Beerbower
• Created: 04/Nov/13 10:11
• Updated: 08/Nov/13 16:16
• Resolved: 08/Nov/13 16:16

Description

Currently the UI loads all the host-components for a service just to calculate the status of a service. So if YARN, HDFS are installed on a 1000 node cluster, we get 2000 host-components in response just to calculate the color of 2 services (stopped=red, started=green, starting=blinking-green, stopping=blinking-red, etc., unknown=yellow)

This is not scalable on the browser. We want the API to roll-up the host-component statuses, and correctly update the ServiceInfo/state of the service. This will help UI in not loading all host_components.