SLF4J:类路径包含多个SLF4J绑定。- Apache Kafka 3.1

Question

我正在尝试从git源运行Apache，但是我得到了multiple SLF4J bindings警告，这会导致在使用码头容器时失败。

根据文件；

git clone --depth 1 --branch 3.1 https://github.com/apache/kafka.git

cd kafka

./gradlew clean
./gradlew dependencyUpdates
./gradlew jar -PscalaVersion=2.13.6

export UUID=$(./bin/kafka-storage.sh random-uuid); ./bin/kafka-storage.sh format -t $UUID -c ./config/kraft/server.properties

因此，我得到：

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/core/build/dependant-libs-2.13.6/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/tools/build/dependant-libs-2.13.6/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/trogdor/build/dependant-libs-2.13.6/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/api/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/transforms/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/runtime/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/file/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/mirror/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/mirror-client/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/json/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/basic-auth-extension/build/dependant-libs/slf4j-log4j12-1.7.30.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 [org.slf4j.impl.Log4jLoggerFactory]
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/core/build/dependant-libs-2.13.6/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/tools/build/dependant-libs-2.13.6/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/trogdor/build/dependant-libs-2.13.6/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/api/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/transforms/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/runtime/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/file/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/mirror/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/mirror-client/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/json/build/dependant-libs/slf4j-log4j12-1.7.30.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/ubuntu/kafka/connect/basic-auth-extension/build/dependant-libs/slf4j-log4j12-1.7.30.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 [org.slf4j.impl.Log4jLoggerFactory]

对于如何解决这个问题，有什么想法吗？

Answer 1

这里唯一的问题是kafka-storage脚本多次加载同一个jar。

版本没有什么不同，所以没有实际的问题。bin/kafka-run-class脚本应该执行正确的类路径隔离

您不应该需要Gradle运行KRaft模式