Jacek Wojciechowski created KAFKA-16357: -------------------------------------------
Summary: Kafka Client JAR manifest breaks javac linting Key: KAFKA-16357 URL: https://issues.apache.org/jira/browse/KAFKA-16357 Project: Kafka Issue Type: Bug Components: clients Affects Versions: 3.7.0 Environment: Linux, JDK 21 (Docker image eclipse-temurin:21-jdk-jammy) Reporter: Jacek Wojciechowski I upgraded kafka-clients from 3.6.1 to 3.7.0 and discovered that my project is not building anymore. The reason is that kafka-clients-3.7.0.jar contains the following entry in its JAR manifest file: Class-Path: zstd-jni-1.5.5-6.jar lz4-java-1.8.0.jar snappy-java-1.1.10 .5.jar slf4j-api-1.7.36.jar I'm using Maven repo to keep my dependencies and those files are not in the same directory as kafka-clients-3.7.0.jar, so the paths in the manifest's Class-Path are not correct. It fails my build because we build with javac with all linting options on, in particular -Xlint:-path. It produces the following warnings coming from javac: [WARNING] COMPILATION WARNING : [INFO] ------------------------------------------------------------- [WARNING] [path] bad path element "/home/ci/.m2/repository/org/apache/kafka/kafka-clients/3.7.0/zstd-jni-1.5.5-6.jar": no such file or directory [WARNING] [path] bad path element "/home/ci/.m2/repository/org/apache/kafka/kafka-clients/3.7.0/lz4-java-1.8.0.jar": no such file or directory [WARNING] [path] bad path element "/home/ci/.m2/repository/org/apache/kafka/kafka-clients/3.7.0/snappy-java-1.1.10.5.jar": no such file or directory [WARNING] [path] bad path element "/home/ci/.m2/repository/org/apache/kafka/kafka-clients/3.7.0/slf4j-api-1.7.36.jar": no such file or directory Since we have also {{-Werror}} option enabled, it turns warnings into errors and fails our build. I think our setup is quite typical: using Maven repo to store dependencies, having linting on and -Werror. Unfortunatelly, it doesn't work with the lastest kafka-clients because of the entries in the manifest's Class-Path. And I think it might affect quite a lot of projects set up in a similar way. I don't know what was the reason to add Class-Path entry in the JAR manifest file - but perhaps this effect was not considered. It would be great if you removed the Class-Path entry from the JAR manifest file. -- This message was sent by Atlassian Jira (v8.20.10#820010)