[improve][broker] Add class name and line number output to the log.

[hanmz]

Motivation

The current log file does not output the class name and line number. In some cases, it is difficult to quickly locate specific lines of code based on the log content.

Before optimization, we could only see the name of the logger, but we didn’t know which line of log output was of which class.
The log example is as follows:

After optimization, we print out the class name and line number, so we can quickly locate the specific line of code.
The log example is as follows:

Modifications

Add java class file name and line number output to the log.
"%d{ISO8601_OFFSET_DATE_TIME_HHMM} [%t] %-5level %logger{36} **(%F:%L)** - %msg%n"

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

[lhotari]

If you need the line number, please make this change to your own local version of the logging configuration files.

We turned off the location information also for tests in #22251 because of performance reasons.

The overhead is explain in https://logging.apache.org/log4j/2.x/manual/layouts.html#location-information

[lhotari]

I'll close this since this would cause a performance issue. Please check the previous comment for details and a workaround.