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Posted to issues@flink.apache.org by "jiawen xiao (Jira)" <ji...@apache.org> on 2020/12/29 07:13:00 UTC

[jira] [Comment Edited] (FLINK-20777) Default value of property "partition.discovery.interval.ms" is not as documented in new Kafka Source

    [ https://issues.apache.org/jira/browse/FLINK-20777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17255847#comment-17255847 ] 

jiawen xiao edited comment on FLINK-20777 at 12/29/20, 7:12 AM:
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sorry [~renqs],i think this is not a problem. you 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.


was (Author: 873925389@qq.com):
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. 



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