[GitHub] [kafka] ijuma commented on a diff in pull request #12114: MINOR: Note that slf4j-log4j in version 1.7.35+ should be used

[GitBox <gi...@apache.org>]

ijuma commented on code in PR #12114:
URL: https://github.com/apache/kafka/pull/12114#discussion_r862967880


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docs/upgrade.html:
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@@ -73,7 +73,11 @@ <h5><a id="upgrade_320_notable" href="#upgrade_320_notable">Notable changes in 3
             via Connect worker and/or connector configuration. Connect may enable idempotent producers
             by default in a future major release.</li>
         <li>Kafka has replaced log4j and slf4j-log4j12 with reload4j and slf4j-reload4j due to security concerns.

Review Comment:
   Maybe we can say something like:
   
   >         <li>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 <a href"https://reload4j.qos.ch">reload4j</a>.
   >             Projects that depend on the affected modules from the Kafka project should use
   >             <a href="https://www.slf4j.org/manual.html#swapping">slf4j-log4j12 version 1.7.35 or above</a> or
   >             slf4j-reload4j to avoid
   >             <a href="https://www.slf4j.org/codes.html#no_tlm">possible compatibility issues originating from the logging framework</a>.



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