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https://issues.apache.org/jira/browse/KAFKA-1602?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guozhang Wang resolved KAFKA-1602.
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Resolution: Not A Problem
> Use single error code for offset commit response
> ------------------------------------------------
>
> Key: KAFKA-1602
> URL: https://issues.apache.org/jira/browse/KAFKA-1602
> Project: Kafka
> Issue Type: Bug
> Reporter: Guozhang Wang
> Priority: Major
> Labels: newbie++
>
> As discussed with Joel offline, today the offset commit response contains an
> error code for each partition, but the error code will almost always be the
> same across all partitions. Offset commits for a given consumer instance in a
> consumer group all go to the same partition of the offsets topic. So there
> are only two known cases when we may want it to be different: (i) some
> partitions may have very large metadata leading to a metadata-size-too-large
> error (ii) if we don't use compression (which will be the case until we have
> KAFKA-1374) there could be partial appends. Given that: item (ii) is a corner
> case and if we use compression (which we will turn on by default once
> KAFKA-1374 is done) item (i) will be eliminated; and that item (i) will be
> easier to handle by just failing the whole request and sending back a single
> error code (of metadata too large); we can just have a single error-code in
> the response.
> Note that this will be a protocol change and hence we need to bump up the
> response version number.
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