[HBASE-25469] Add detailed RIT info in JSON format for consumption as metrics - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Minor
Resolution: Fixed
Affects Version/s: 3.0.0-alpha-1, 2.4.6, 2.3.7
Fix Version/s: 2.5.0, 3.0.0-alpha-2, 1.7.2, 2.4.6
Component/s: master
Labels:
- observability

Hadoop Flags:

Reviewed

Description

In HBase 2.1+, there is a RIT jsp page that was added as part of ~~HBASE-21410~~.

There are some additional RIT details that would be helpful to have in one place:

RIT Start Time
RIT Duration (ms)
Server
Procedure Type

This info can be added to the table under the /rit.jsp page, and we can also add a button on that page to view info as JSON, for easy parsing into metrics, etc. This JSON dump can be served as a servlet.

We may also consider different ways of grouping the JSON results, such as by state, table, or server name, and/or adding counts of RIT by state or server name.