java.lang.LinkageError: loader constraint violation

["casel.chen" <ca...@126.com>]

使用flink 1.12.1，作业依赖了flink-sql-connector-kafka （依赖kafka-client 2.4.1) 和一个消费阿里dts应用的connector（该connector依赖kafka-client 1.0.0)，出现下面的异常后我将flink-sql-connector-kafka依赖的kafka-client也换成了1.0.0，结果运行作业还是报同样的异常。请问这是jar包冲突造成的吗？应该怎么解决？


Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of org/apache/flink/util/ChildFirstClassLoader) previously initiated loading for a different type with name "org/apache/kafka/clients/consumer/ConsumerRecord"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
at org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:71)
at org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:48)