[jira] [Created] (KAFKA-9276) Unclear warning due to empty throttled fetch response

["Bob Barrett (Jira)" <ji...@apache.org>]

Bob Barrett created KAFKA-9276:
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             Summary: Unclear warning due to empty throttled fetch response
                 Key: KAFKA-9276
                 URL: https://issues.apache.org/jira/browse/KAFKA-9276
             Project: Kafka
          Issue Type: Bug
          Components: core
    Affects Versions: 2.3.0
            Reporter: Bob Barrett


With a version 1.0.0 consumer talking to a 2.3.0 broker, the following WARN-level statement is logged when a request is throttled:
{code:java}
Ignoring fetch response containing partitions [] since it does not match the requested partitions [topic-29, topic-25, topic-21, topic-17, topic-33]{code}
It appears that the 1.0.0 consumer expects fetch data for all partitions, but the throttled response is empty, causing an unclear warning message. This may be a regression from KIP-219, which changed the throttling behavior to return the empty fetch response. 



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