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Code Issues Actions 2 Packages Projects Releases Wiki Activity

KAFKA-19503: Deprecate MX4j support (#20208)
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This feature adds maintenance burden and potential security concerns
while providing no apparent value to the Kafka community. See
[KIP-1193](https://cwiki.apache.org/confluence/x/dAxJFg) for more
details.

Reviewers: TengYao Chi <frankvicky@apache.org>, Ken Huang
 <s7133700@gmail.com>

---------

Signed-off-by: Federico Valeri <fedevaleri@gmail.com>
This commit is contained in:
Federico Valeri 2025-07-22 14:36:24 +02:00 committed by GitHub
parent 5cf6a9d80d
commit f5fcc4188f
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2 changed files with 5 additions and 1 deletions
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2
core/src/main/scala/kafka/utils/Mx4jLoader.scala
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@ -30,12 +30,14 @@ import javax.management.ObjectName
* *
* This is a Scala port of org.apache.cassandra.utils.Mx4jTool written by Ran Tavory for CASSANDRA-1068 * This is a Scala port of org.apache.cassandra.utils.Mx4jTool written by Ran Tavory for CASSANDRA-1068
* */ * */
@deprecated
object Mx4jLoader extends Logging { object Mx4jLoader extends Logging {
def maybeLoad(): Boolean = { def maybeLoad(): Boolean = {
val props = new VerifiableProperties(System.getProperties) val props = new VerifiableProperties(System.getProperties)
if (!props.getBoolean("kafka_mx4jenable", default = false)) if (!props.getBoolean("kafka_mx4jenable", default = false))
return false return false
warn("MX4j is deprecated and will be removed in Kafka 5.0")
val address = props.getString("mx4jaddress", "0.0.0.0") val address = props.getString("mx4jaddress", "0.0.0.0")
val port = props.getInt("mx4jport", 8082) val port = props.getInt("mx4jport", 8082)
try { try {

4
docs/upgrade.html
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@ -34,9 +34,11 @@
<li>The <code>KafkaPrincipalBuilder</code> now extends <code>KafkaPrincipalSerde</code>. Force developer to implement <code>KafkaPrincipalSerde</code> interface for custom <code>KafkaPrincipalBuilder</code>. <li>The <code>KafkaPrincipalBuilder</code> now extends <code>KafkaPrincipalSerde</code>. Force developer to implement <code>KafkaPrincipalSerde</code> interface for custom <code>KafkaPrincipalBuilder</code>.
For further details, please refer to <a href="https://cwiki.apache.org/confluence/x/1gq9F">KIP-1157</a>. For further details, please refer to <a href="https://cwiki.apache.org/confluence/x/1gq9F">KIP-1157</a>.
</li> </li>
<li>
The support for MX4J library, enabled through <code>kafka_mx4jenable</code> system property, was deprecated and will be removed in Kafka 5.0.
</li>
</ul> </ul>
<h4><a id="upgrade_4_1_0" href="#upgrade_4_1_0">Upgrading to 4.1.0</a></h4> <h4><a id="upgrade_4_1_0" href="#upgrade_4_1_0">Upgrading to 4.1.0</a></h4>
<h5><a id="upgrade_4_1_0_from" href="#upgrade_4_1_0_from">Upgrading Servers to 4.1.0 from any version 3.3.x through 4.0.x</a></h5> <h5><a id="upgrade_4_1_0_from" href="#upgrade_4_1_0_from">Upgrading Servers to 4.1.0 from any version 3.3.x through 4.0.x</a></h5>