iwasakims commented on PR #1310:
URL: https://github.com/apache/bigtop/pull/1310#issuecomment-2509011607

   ```
   SLF4J: Class path contains multiple SLF4J bindings.
   SLF4J: Found binding in 
[jar:file:/usr/lib/kafka/libs/logback-classic-1.2.13.jar!/org/slf4j/impl/StaticLoggerBinder.class]
   SLF4J: Found binding in 
[jar:file:/usr/lib/kafka/libs/slf4j-reload4j-1.7.36.jar!/org/slf4j/impl/StaticLoggerBinder.class]
   SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an 
explanation.
   SLF4J: Actual binding is of type 
[ch.qos.logback.classic.util.ContextSelectorStaticBinder]
   ```
   
   @sekikn The cause of test failure turned out to be multiple logger bindings. 
If the logback binding is used, settings in log4j.properties and 
tools-log4j.properties are ignored and all level of logs are emitted to stdout. 
Since the test2ReadKafkaTopics compares stdout of kafka-console-consumer.sh 
with the expected result, the emitted logs break the test. Removing the 
logback-classic-1.2.13.jar fixed the issue.


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