Hi Gonzalo, For the produce request record version, you should refer to this file: https://github.com/apache/kafka/blob/trunk/clients/src/main/resources/common/message/ProduceRequest.json#L35
But you're right, basically the message conversion happened in a very old produce request version (ex: version 1 or version 2, which I guess is corresponding to Kafka v1.0 or older) sent to a new versioned broker, like this comment said in the file above: // Version 3 adds the transactional ID, which is used for authorization when attempting to write // transactional data. *Version 3 also adds support for Kafka Message Format v2.* Could you let us know which kafka version you're using in broker? And which client and version you're using? And the broker configuration and client configuration is also helpful. Thank you Luke On Tue, Feb 7, 2023 at 11:12 PM Gonzalo Martin Peci <pecigonz...@gmail.com> wrote: > Hi! We have been trying to figure out why we see a high value of > ProduceMessageConversionsPerSec and potentially high CPU usage. I was > trying to understand what version our producers/consumers were using, but I > was unable to grok this. Any help would be appreciated. > > We are seeing values of `version=8` and `version=9` for RequestsPerSec > "request=produce", and we found: > > https://github.com/apache/kafka/blob/trunk/server-common/src/main/java/org/apache/kafka/server/common/MetadataVersion.java#L163-L171 > which indicate version 3.4 and 3.5. > > Im following what is described in KIP-272. Although I later found KIP-511 > which seems to expose a new metric, KIP-896 also implies that versions are > checked through the RequestsPerSec metric. > > Any guidance will be appreciated. > > References: > - > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-272%3A+Add+API+version+tag+to+broker%27s+RequestsPerSec+metric > - > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-511%3A+Collect+and+Expose+Client%27s+Name+and+Version+in+the+Brokers > - > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-896%3A+Remove+old+client+protocol+API+versions+in+Kafka+4.0 > > Thanks > Gonzalo >
