[IMPALA-13345] Log the package/class name when changing FE log levels

• Type: Task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Backend
• Labels: new-bie ramp-up
• Epic Color: ghx-label-3
• Assignee: Unassigned
• Reporter: Quanlong Huang
• Created: 03/Sep/24 01:23
• Updated: 03/Sep/24 01:24

Description

In the /log_level page of WebUI, we can change the log level of Frontend and Backend without restarting the process. For the FE part, a package/class name is specified as the target. However, the name is not logged:

I0903 09:15:50.923060  8414 logging-support.cc:181] New Java log level set: TRACE

There are no ways to track what have been done on the WebUI. It'd be helpful to log the package/class name of the request. Code:
https://github.com/apache/impala/blob/53a452af669b022fd2ab19eb58a5dc5ea29aed78/be/src/util/logging-support.cc#L181