Hello, I'm trying to build Kafka 0.9.0.1 using JDK8, so that it generates JDK8 compatible class files. However, no matter what I try, it seems the class files generated are for JDK6. I've tried setting sourceCompatibility and targetCompatibility to 1.8 to no avail.
------------------------ $ pwd kafka-0.9.0.1-src $ javac -version javac 1.8.0_77 $ diff build.gradle 90c90,91 < sourceCompatibility = 1.7 --- > sourceCompatibility = "1.8" > targetCompatibility = "1.8" 184a186,187 > sourceCompatibility = "1.8" > targetCompatibility = "1.8" 254a258,259 > sourceCompatibility = "1.8" > targetCompatibility = "1.8" $ ./gradlew -PscalaVersion=2.11.7 clean releaseTarGz -x signArchives ... $ file ./core/build/classes/main/kafka/common/TopicAndPartition.class ./core/build/classes/main/kafka/common/TopicAndPartition.class: compiled Java class data, version 50.0 (Java 1.6) ------------------------ Is compiling Kafka to JDK8 compatible class files supported? Has anyone done this successfully, and can tell me what I'm doing wrong? Thanks much, -Kyle
