KAFKA-18272: Deprecated protocol api usage should be logged at info level #18313
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…evel This makes it possible to enable request logs for deprecated protocol api versions without enabling it for the rest. Combined with the ability to enable/disable dynamically, it makes it a bit easier to collect the information about deprecated clients that is not available via metrics.
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This makes it possible to enable request logs for deprecated protocol api versions without enabling it for the rest. Combined with the ability to enable/disable dynamically, it makes it a bit easier to collect the information about deprecated clients that is not available via metrics.
This isn't particularly useful in trunk/4.0 since there are no deprecated api versions in these versions, but it will be useful for older branches. I intend to backport to those branches and add a release note in the backport regarding the change in behavior.
I manually verified that:
INFOlevel, only deprecated protocol api versions are logged and they are logged atINFOlevel.DEBUGlevel, all requests are logged but the log level isINFOfor deprecated protocol api versions andDEBUGfor the rest.WARNlevel (the default), no requests are logged.Committer Checklist (excluded from commit message)