ijuma commented on code in PR #12114:
URL: https://github.com/apache/kafka/pull/12114#discussion_r862967880
##
docs/upgrade.html:
##
@@ -73,7 +73,11 @@ Notable changes in 3
via Connect worker and/or connector configuration. Connect may
enable idempotent producers
by default in a future major release.
Kafka has replaced log4j and slf4j-log4j12 with reload4j and
slf4j-reload4j due to security concerns.
Review Comment:
Maybe we can say something like:
> Kafka has replaced log4j and slf4j-log4j12 with reload4j and
slf4j-reload4j due to security concerns.
> This only affects modules that specify a logging backend
(`connect-runtime` and `kafka-tools` are two such
> examples). A number of modules, including `kafka-clients`,
leave it to the application to specify the logging
> backend. More information can be found at https://reload4j.qos.ch;>reload4j.
> Projects that depend on the affected modules from the Kafka
project should use
> https://www.slf4j.org/manual.html#swapping;>slf4j-log4j12 version 1.7.35
or above or
> slf4j-reload4j to avoid
> https://www.slf4j.org/codes.html#no_tlm;>possible
compatibility issues originating from the logging framework.
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