shangan commented on issue #388: Fix bug. Producer failed to shutdown when exception happened URL: https://github.com/apache/rocketmq-externals/pull/388#issuecomment-521985998 Exception stack: ` java.lang.RuntimeException: org.apache.rocketmq.client.exception.MQClientException: The producer group[PID_sync_nyx_btn_position] has been created before, specify another name please. See http://rocketmq.apache.org/docs/faq/ for further details. at org.apache.rocketmq.flink.RocketMQSink.open(RocketMQSink.java:91) at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:36) at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:102) at org.apache.flink.streaming.api.operators.StreamSink.open(StreamSink.java:48) at org.apache.flink.streaming.runtime.tasks.StreamTask.openAllOperators(StreamTask.java:424) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:290) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.rocketmq.client.exception.MQClientException: The producer group[PID_sync_nyx_btn_position] has been created before, specify another name please. See http://rocketmq.apache.org/docs/faq/ for further details. at org.apache.rocketmq.client.impl.producer.DefaultMQProducerImpl.start(DefaultMQProducerImpl.java:157) at org.apache.rocketmq.client.impl.producer.DefaultMQProducerImpl.start(DefaultMQProducerImpl.java:138) at org.apache.rocketmq.client.producer.DefaultMQProducer.start(DefaultMQProducer.java:172) at org.apache.rocketmq.flink.RocketMQSink.open(RocketMQSink.java:89) ... 7 more `
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