[HBASE-21521] Expose master startup status via web UI

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.6.0, 3.0.0-alpha-4, 2.4.17, 2.5.4
• Component/s: master, UI
• Assignee: Xiaolin Ha
• Reporter: Andrew Kyle Purtell
• Created: 29/Nov/18 01:42
• Updated: 17/Feb/23 05:50
• Resolved: 16/Feb/23 01:32

Description

Add an internal API to the master for tracking startup progress. Expose this information via JMX.

Modify the master to bring the web UI up sooner. Will require tweaks to various views to prevent attempts to retrieve state before the master fully up (or else expect NPEs). Currently, before the master has fully initialized an attempt to use the web UI will return a 500 error code and display an error page.

Finally, update the web UI to display startup progress, like HDFS-4249. 

Filing this for branch-1. Need to check what if anything is available or improved in branch-2 and master.

Issue Links

• links to: GitHub Pull Request #3667
• links to: GitHub Pull Request #4788
• links to: GitHub Pull Request #5021
• links to: GitHub Pull Request #5022
• links to: GitHub Pull Request #5026

Sub-Tasks

• Expose master startup status via JMX: Open