[HBASE-25002] Create simple pattern matching query for retrieving metrics matching the pattern

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.5
• Fix Version/s: 3.0.0-alpha-1, 2.4.0
• Hadoop Flags: Reviewed
• Assignee: ramkrishna.s.vasudevan
• Reporter: ramkrishna.s.vasudevan
• Created: 09/Sep/20 05:05
• Updated: 15/Sep/20 15:42
• Resolved: 14/Sep/20 14:14

Description

Currently we allow querying a metric with a specific metric name. But generally say under the MBean sub=Tables under a server we might have 'n' number of tables and we might be interested in a specific metric across all tables.
So in such cases giving a simple pattern based query will help so that we can retrieve all metrics that follow that pattern.
The other side effect is that we can also reduce the size of the json we pull from the server to the querying client. Which are generally smaller scripts which might not be able to process the big sized response JSON.

Thanks anoopsamjohn for the suggestion.

Issue Links

• links to: GitHub Pull Request #2370
• links to: GitHub Pull Request #2398