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https://issues.apache.org/jira/browse/KAFKA-4935?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ismael Juma updated KAFKA-4935:
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Fix Version/s: 0.11.0.0
> Consider disabling record level CRC checks for message format V2
> ----------------------------------------------------------------
>
> Key: KAFKA-4935
> URL: https://issues.apache.org/jira/browse/KAFKA-4935
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Apurva Mehta
> Assignee: Jason Gustafson
> Priority: Blocker
> Labels: exactly-once
> Fix For: 0.11.0.0, 0.11.1.0
>
>
> With the new message format proposed in KIP-98, the record level CRC has been
> moved to the the batch header.
> Because we expose the record-level CRC in `RecordMetadata` and
> `ConsumerRecord`, we currently compute it eagerly based on the key, value and
> timestamp even though these methods are rarely used. Ideally, we'd deprecate
> the relevant methods in `RecordMetadata` and `ConsumerRecord` while making
> the CRC computation lazy. This seems pretty hard to achieve in the Producer
> without increasing memory retention, but it may be possible to do in the
> Consumer.
> An alternative option is to return the batch CRC from the relevant methods.
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