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https://issues.apache.org/jira/browse/KAFKA-6622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16390502#comment-16390502
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radai rosenblatt commented on KAFKA-6622:
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see PR - https://github.com/apache/kafka/pull/4661
> GroupMetadataManager.loadGroupsAndOffsets decompresses record batch needlessly
> ------------------------------------------------------------------------------
>
> Key: KAFKA-6622
> URL: https://issues.apache.org/jira/browse/KAFKA-6622
> Project: Kafka
> Issue Type: Bug
> Reporter: radai rosenblatt
> Assignee: radai rosenblatt
> Priority: Major
> Attachments: kafka batch iteration funtime.png
>
>
> when reading records from a consumer offsets batch, the entire batch is
> decompressed multiple times (per record) as part of calling
> `batch.baseOffset`. this is a very expensive operation being called in a loop
> for no reason:
> !kafka batch iteration funtime.png!
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