diff --git a/examples/conf/druid/auto/_common/log4j2.xml b/examples/conf/druid/auto/_common/log4j2.xml
index 0bda2f6968f..eb24a2a8940 100644
--- a/examples/conf/druid/auto/_common/log4j2.xml
+++ b/examples/conf/druid/auto/_common/log4j2.xml
@@ -82,5 +82,10 @@
     <Logger name="com.sun.jersey.guice" level="warn" additivity="false">
       <Appender-ref ref="FileAppender"/>
     </Logger>
+
+    <!-- Quieter KafkaSupervisors -->
+    <Logger name="org.apache.kafka.clients.consumer.internals" level="warn" additivity="false">
+      <Appender-ref ref="FileAppender"/>
+    </Logger>
   </Loggers>
 </Configuration>
diff --git a/examples/conf/druid/single-server/large/_common/log4j2.xml b/examples/conf/druid/single-server/large/_common/log4j2.xml
index 0bda2f6968f..eb24a2a8940 100644
--- a/examples/conf/druid/single-server/large/_common/log4j2.xml
+++ b/examples/conf/druid/single-server/large/_common/log4j2.xml
@@ -82,5 +82,10 @@
     <Logger name="com.sun.jersey.guice" level="warn" additivity="false">
       <Appender-ref ref="FileAppender"/>
     </Logger>
+
+    <!-- Quieter KafkaSupervisors -->
+    <Logger name="org.apache.kafka.clients.consumer.internals" level="warn" additivity="false">
+      <Appender-ref ref="FileAppender"/>
+    </Logger>
   </Loggers>
 </Configuration>
diff --git a/examples/conf/druid/single-server/medium/_common/log4j2.xml b/examples/conf/druid/single-server/medium/_common/log4j2.xml
index 0bda2f6968f..eb24a2a8940 100644
--- a/examples/conf/druid/single-server/medium/_common/log4j2.xml
+++ b/examples/conf/druid/single-server/medium/_common/log4j2.xml
@@ -82,5 +82,10 @@
     <Logger name="com.sun.jersey.guice" level="warn" additivity="false">
       <Appender-ref ref="FileAppender"/>
     </Logger>
+
+    <!-- Quieter KafkaSupervisors -->
+    <Logger name="org.apache.kafka.clients.consumer.internals" level="warn" additivity="false">
+      <Appender-ref ref="FileAppender"/>
+    </Logger>
   </Loggers>
 </Configuration>
diff --git a/examples/conf/druid/single-server/micro-quickstart/_common/log4j2.xml b/examples/conf/druid/single-server/micro-quickstart/_common/log4j2.xml
index 0bda2f6968f..eb24a2a8940 100644
--- a/examples/conf/druid/single-server/micro-quickstart/_common/log4j2.xml
+++ b/examples/conf/druid/single-server/micro-quickstart/_common/log4j2.xml
@@ -82,5 +82,10 @@
     <Logger name="com.sun.jersey.guice" level="warn" additivity="false">
       <Appender-ref ref="FileAppender"/>
     </Logger>
+
+    <!-- Quieter KafkaSupervisors -->
+    <Logger name="org.apache.kafka.clients.consumer.internals" level="warn" additivity="false">
+      <Appender-ref ref="FileAppender"/>
+    </Logger>
   </Loggers>
 </Configuration>
diff --git a/examples/conf/druid/single-server/nano-quickstart/_common/log4j2.xml b/examples/conf/druid/single-server/nano-quickstart/_common/log4j2.xml
index 0bda2f6968f..eb24a2a8940 100644
--- a/examples/conf/druid/single-server/nano-quickstart/_common/log4j2.xml
+++ b/examples/conf/druid/single-server/nano-quickstart/_common/log4j2.xml
@@ -82,5 +82,10 @@
     <Logger name="com.sun.jersey.guice" level="warn" additivity="false">
       <Appender-ref ref="FileAppender"/>
     </Logger>
+
+    <!-- Quieter KafkaSupervisors -->
+    <Logger name="org.apache.kafka.clients.consumer.internals" level="warn" additivity="false">
+      <Appender-ref ref="FileAppender"/>
+    </Logger>
   </Loggers>
 </Configuration>
diff --git a/examples/conf/druid/single-server/small/_common/log4j2.xml b/examples/conf/druid/single-server/small/_common/log4j2.xml
index 0bda2f6968f..eb24a2a8940 100644
--- a/examples/conf/druid/single-server/small/_common/log4j2.xml
+++ b/examples/conf/druid/single-server/small/_common/log4j2.xml
@@ -82,5 +82,10 @@
     <Logger name="com.sun.jersey.guice" level="warn" additivity="false">
       <Appender-ref ref="FileAppender"/>
     </Logger>
+
+    <!-- Quieter KafkaSupervisors -->
+    <Logger name="org.apache.kafka.clients.consumer.internals" level="warn" additivity="false">
+      <Appender-ref ref="FileAppender"/>
+    </Logger>
   </Loggers>
 </Configuration>
diff --git a/examples/conf/druid/single-server/xlarge/_common/log4j2.xml b/examples/conf/druid/single-server/xlarge/_common/log4j2.xml
index 0bda2f6968f..eb24a2a8940 100644
--- a/examples/conf/druid/single-server/xlarge/_common/log4j2.xml
+++ b/examples/conf/druid/single-server/xlarge/_common/log4j2.xml
@@ -82,5 +82,10 @@
     <Logger name="com.sun.jersey.guice" level="warn" additivity="false">
       <Appender-ref ref="FileAppender"/>
     </Logger>
+
+    <!-- Quieter KafkaSupervisors -->
+    <Logger name="org.apache.kafka.clients.consumer.internals" level="warn" additivity="false">
+      <Appender-ref ref="FileAppender"/>
+    </Logger>
   </Loggers>
 </Configuration>