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Ankit Kumar commented on KAFKA-10072: ------------------------------------- Hey [~qq619618919], I was trying to replicate the issue, but unable to find any anomaly in the Consumer behavior. Can you please share the steps to replicate the issue? ./kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic test_topic --consumer-property client.id=aa --from-beginning SLF4J: Class path contains multiple SLF4J bindings. ... SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory] Test Msg 1 Test Msg 2 ------------------ ./kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic test_topic --consumer-property clientid=bb --from-beginning SLF4J: Class path contains multiple SLF4J bindings. ... SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory] [2020-09-01 13:48:13,759] WARN The configuration 'clientid' was supplied but isn't a known config. (org.apache.kafka.clients.consumer.ConsumerConfig) Test Msg 1 Test Msg 2 > Kafkaconsumer is configured with different clientid parameters to obtain > different results > ------------------------------------------------------------------------------------------ > > Key: KAFKA-10072 > URL: https://issues.apache.org/jira/browse/KAFKA-10072 > Project: Kafka > Issue Type: Bug > Components: core > Affects Versions: 2.4.0 > Environment: centos7.6 8C 32G > Reporter: victor > Assignee: Ankit Kumar > Priority: Blocker > > kafka-console-consumer.sh --bootstrap-server host1:port --consumer-property > {color:#DE350B}client.id=aa{color} --from-beginning --topic topicA > {color:#DE350B}There's no data > {color} > kafka-console-consumer.sh --bootstrap-server host1:port --consumer-property > {color:#DE350B}clientid=bb{color} --from-beginning --topic topicA > {color:#DE350B}Successfully consume data{color} -- This message was sent by Atlassian Jira (v8.3.4#803005)