[YARN-9543] [UI2] Handle ATSv2 server down or failures cases gracefully in YARN UI v2

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1.2
• Fix Version/s: 3.3.0, 3.2.1, 3.1.3
• Component/s: ATSv2, yarn-ui-v2
• Target Version/s: 3.1.2
• Assignee: Zoltan Siegl
• Reporter: Zoltan Siegl
• Created: 10/May/19 10:54
• Updated: 12/Jun/19 13:56
• Resolved: 12/Jun/19 13:56

Description

Resource manager UI2 is throwing some console errors and an error page on the flows page.

Suggested improvements:

• Disable or remove the flows tab if ATSv2 is not available or not installed
• Handle all connection errors to ATSv2 gracefully

Issue Links

• depends upon: YARN-9545 Create healthcheck REST endpoint for ATSv2