[IMPALA-5643] Report the number of currently running and total number of started threads per group in /threadz

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.10.0
• Fix Version/s: Impala 2.10.0
• Component/s: Backend
• Labels: observability supportability
• Target Version: Impala 2.10.0
• Epic Color: ghx-label-8
• Assignee: Lars Volker
• Reporter: Lars Volker
• Created: 10/Jul/17 22:12
• Updated: 11/Jul/17 18:56
• Resolved: 11/Jul/17 18:56

Description

It would be helpful to see the number of currently running threads as well as the total number of threads started so far in /threadz.

For example:

All threads
DataStreamSender : (running: 0, total created: 2500)
common : (running: 2, total created: 2)
...