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https://issues.apache.org/jira/browse/KAFKA-1588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Palino updated KAFKA-1588:
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    Description: 
When performing an OffsetRequest, if you request the same topic and partition 
combination in a single request more than once (for example, if you want to get 
both the head and tail offsets for a partition in the same request), you will 
get a response for both, but they will be the same offset.

We identified that the problem is that when the offset response is assembled, a 
map is used to store the offset info before it is converted to the response 
format and sent to the client. Therefore, the second request for a 
topic/partition combination will overwrite the offset from the first request.

  was:
When performing an OffsetFetchRequest, if you request the same topic and 
partition combination in a single request more than once (for example, if you 
want to get both the head and tail offsets for a partition in the same 
request), you will get a response for both, but they will be the same offset.

We identified that the problem is that when the offset response is assembled, a 
map is used to store the offset info before it is converted to the response 
format and sent to the client. Therefore, the second request for a 
topic/partition combination will overwrite the offset from the first request.


Thanks, Jun, I had written that incorrectly. It is the OffsetRequest that 
manifests the problem. I've edited the description.

> Offset response does not support two requests for the same topic/partition 
> combo
> --------------------------------------------------------------------------------
>
>                 Key: KAFKA-1588
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1588
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.8.2
>            Reporter: Todd Palino
>
> When performing an OffsetRequest, if you request the same topic and partition 
> combination in a single request more than once (for example, if you want to 
> get both the head and tail offsets for a partition in the same request), you 
> will get a response for both, but they will be the same offset.
> We identified that the problem is that when the offset response is assembled, 
> a map is used to store the offset info before it is converted to the response 
> format and sent to the client. Therefore, the second request for a 
> topic/partition combination will overwrite the offset from the first request.



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