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https://issues.apache.org/jira/browse/FLINK-20777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17256288#comment-17256288
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Jiangjie Qin commented on FLINK-20777:
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>From a Kafka user's perspective, I would expect the partition changes to be
>picked up by the Flink job automatically, so I don't have to restart the Flink
>job. Therefore, enabling partition discovery by default seems reasonable to me.
[[email protected]] I am curious about the case that people don't want to start
consuming from the new partitions right away. Do you mind sharing some concrete
scenarios? Thanks.
> 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.
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