问题：批处理写入kafka，结束关闭kafka时出现错误：

Caused by: java.lang.NoSuchMethodError: org.apache.kafka.clients.producer.KafkaProducer.close(Ljava/time/Duration;)V

at org.apache.flink.streaming.connectors.kafka.internals.FlinkKafkaInternalProducer.close(FlinkKafkaInternalProducer.java:172) ~[flink-connector-kafka_2.12-1.0.0.jar:?]

at org.apache.flink.streaming.connectors.kafka.FlinkKafkaProducer.close(FlinkKafkaProducer.java:941) ~[flink-connector-kafka_2.12-1.0.0.jar:?]

at org.apache.flink.api.common.functions.util.FunctionUtils.closeFunction(FunctionUtils.java:41) ~[flink-dist_2.12-1.13.2.jar:1.13.2]

at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.close(AbstractUdfStreamOperator.java:109) ~[flink-dist_2.12-1.13.2.jar:1.13.2]

at org.apache.flink.streaming.runtime.tasks.StreamOperatorWrapper.lambda$closeOperator$5(StreamOperatorWrapper.java:213) ~[flink-dist_2.12-1.13.2.jar:1.13.2]

分析：是版本冲突：

  1、    flink-avro-confluent-registry 里面包含了kafka-clients 版本是5.5

 2、kafka connector里面包含了kafka-clients 版本是2.4.1

参考链接

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