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jiawen xiao commented on FLINK-20777: ------------------------------------- sorry [~renqs],i think this is not a problem. your can read code in {{KafkaSourceBuilder}} . The reason you will find "If the source is bounded, do not run periodic partition discovery." so it's a check for bounded streaming which can prevent users from enabling dynamic partition discovery in the case of bounded sources. > Default value of property "partition.discovery.interval.ms" is not as > documented in new Kafka Source > ---------------------------------------------------------------------------------------------------- > > Key: FLINK-20777 > URL: https://issues.apache.org/jira/browse/FLINK-20777 > Project: Flink > Issue Type: Bug > Components: Connectors / Kafka > Reporter: Qingsheng Ren > Priority: Major > Fix For: 1.12.1 > > > The default value of property "partition.discovery.interval.ms" is documented > as 30 seconds in {{KafkaSourceOptions}}, but it will be set as -1 in > {{KafkaSourceBuilder}} if user doesn't pass in this property explicitly. -- This message was sent by Atlassian Jira (v8.3.4#803005)