Jun Rao created KAFKA-598:
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             Summary: decouple fetch size from max message size
                 Key: KAFKA-598
                 URL: https://issues.apache.org/jira/browse/KAFKA-598
             Project: Kafka
          Issue Type: Bug
          Components: core
    Affects Versions: 0.8
            Reporter: Jun Rao


Currently, a consumer has to set fetch size larger than the max message size. 
This increases the memory footprint on the consumer, especially when a large 
number of topic/partition is subscribed. By decoupling the fetch size from max 
message size, we can use a smaller fetch size for normal consumption and when 
hitting a large message (hopefully rare), we automatically increase fetch size 
to max message size temporarily.

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