[jira] [Commented] (KAFKA-7749) confluent does not provide option to set consumer properties at connector level

["Sönke Liebau (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-7749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16737038#comment-16737038 ] 

Sönke Liebau commented on KAFKA-7749:
-------------------------------------

Hi [~pdavidson], can you perhaps elaborate why you'd want to set this at task level? Shouldn't tasks just be for load balancing and hence write to the same cluster? I think Connect currently doesn't have the concept of task-level setting, so that would probably be a larger change..

> confluent does not provide option to set consumer properties at connector level
> -------------------------------------------------------------------------------
>
>                 Key: KAFKA-7749
>                 URL: https://issues.apache.org/jira/browse/KAFKA-7749
>             Project: Kafka
>          Issue Type: Improvement
>          Components: KafkaConnect
>            Reporter: Manjeet Duhan
>            Priority: Major
>
> _We want to increase consumer.max.poll.record to increase performance but this  value can only be set in worker properties which is applicable to all connectors given cluster._
>  __ 
> _Operative Situation :- We have one project which is communicating with Elasticsearch and we set consumer.max.poll.record=500 after multiple performance tests which worked fine for an year._
>  _Then one more project onboarded in the same cluster which required consumer.max.poll.record=5000 based on their performance tests. This configuration is moved to production._
>   _Admetric started failing as it was taking more than 5 minutes to process 5000 polled records and started throwing commitfailed exception which is vicious cycle as it will process same data over and over again._
>  __ 
> _We can control above if start consumer using plain java but this control was not available at each consumer level in confluent connector._
> _I have overridden kafka code to accept connector properties which will be applied to single connector and others will keep on using default properties . These changes are already running in production for more than 5 months._
> _Some of the properties which were useful for us._
> max.poll.records
> max.poll.interval.ms
> request.timeout.ms
> key.deserializer
> value.deserializer
> heartbeat.interval.ms
> session.timeout.ms
> auto.offset.reset
> connections.max.idle.ms
> enable.auto.commit
>  
> auto.commit.interval.ms
>  



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