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https://issues.apache.org/jira/browse/KAFKA-19396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17958649#comment-17958649
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Rajini Sivaram commented on KAFKA-19396:
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[~brandboat] Yes, of course. Thank you!
> Use batched version of offset fetch request in new GroupCoordinator interface
> -----------------------------------------------------------------------------
>
> Key: KAFKA-19396
> URL: https://issues.apache.org/jira/browse/KAFKA-19396
> Project: Kafka
> Issue Type: Improvement
> Reporter: Rajini Sivaram
> Priority: Major
>
> Most of the methods in the group coordinator interface use requests that
> match the corresponding request in the Kafka protocol. But `fetchOffsets` API
> currently takes only a single group from a batched request and is invoked
> multiple times when the request is batched. Since the batched version of the
> API is used by Admin client, it will be good to optimize request processing
> by sending the batched request to the group coordinator instead. For older
> versions of the API, we can pass a single group in the batch.
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