Can fetch.replica.max.bytes be equal to message.max.bytes? 1. The defaults in the official Kafka documentation [1] have the parameter "fetch.replica.max.bytes" set to a higher value than "message.max.bytes". However, nothing in the description of these parameters implies that equality would be wrong.
2. The relevant passage in pg. 41 in the Definitive Guide book [2] does not imply that the former needs to be larger than the latter either. 3. A Cloudera doc [3] however notes that: "replica.fetch.max.bytes [...] must be larger than message.max.bytes, or a broker can accept messages it cannot replicate, potentially resulting in data loss." 4. The only other reference I could find to this strict inequality was this StackOverflow comment [4]. So: Does fetch.replica.max.bytes *have* to be strictly larger to message.max.bytes? If so, what is the technical reason behind this? Thank you. [1] https://kafka.apache.org/documentation/ [2] https://shop.oreilly.com/product/0636920044123.do [3] https://www.cloudera.com/documentation/kafka/latest/topics/kafka_performance.html [4] http://stackoverflow.com/a/39026744/2363529
