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Jun Rao commented on KAFKA-1354: -------------------------------- The issue is related to slf4j. slf4j only provides the api. The user is expected to provide the actual binding implementation. You can include either slf4j-simple.jar or slf4j-log4j12.jar in the classpath. Then the warning will go away. > Failed to load class "org.slf4j.impl.StaticLoggerBinder" > -------------------------------------------------------- > > Key: KAFKA-1354 > URL: https://issues.apache.org/jira/browse/KAFKA-1354 > Project: Kafka > Issue Type: Bug > Components: log > Affects Versions: 0.8.1 > Environment: RHEL > Reporter: RakeshAcharya > Assignee: Jay Kreps > Labels: newbie, patch, usability > Original Estimate: 672h > Remaining Estimate: 672h > > Getting below errors during Kafka startup > SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". > SLF4J: Defaulting to no-operation (NOP) logger implementation > SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further > details. > [2014-03-31 18:55:36,488] INFO Will not load MX4J, mx4j-tools.jar is not in > the classpath (kafka.utils.Mx4jLoader$) -- This message was sent by Atlassian JIRA (v6.2#6252)