Hi Matthias, So looking will be fixed in Kafka 2.5.0, as per https://issues.apache.org/jira/browse/KAFKA-8710, so we will take into account to upgrade properly to that version when ready and stable.
We see this kind of errors in broker logs: [2019-12-01 15:27:39,790] ERROR [ReplicaManager broker=3] Error processing append operation on partition OB_SP11-12 (kafka.server.ReplicaManager) org.apache.kafka.common.errors.UnknownProducerIdException: Found no record of producerId=23001 on the broker at offset 24761in partition OB_SP11-12. It is possible that the last message with the producerId=23001 has been removed due to hitting the retention limit. Just to confirm, I guess they are correlated to producer errors right? Thanks <http://www.williamhill.com/> <http://www.whenthefunstops.co.uk/> Jose Manuel Vega Monroy Java Developer / Software Developer Engineer in Test Direct: +0035 0 2008038 (Ext. 8038) Email: jose.mon...@williamhill.com William Hill | 6/1 Waterport Place | Gibraltar | GX11 1AA On 12/10/2019, 22:11, "Matthias J. Sax" <matth...@confluent.io> wrote: >> Does it mean producer’s metadata was removed due to retention time, Yes. >> and message is failed to be sent? No. Note, it's a warning not an error. The producer resets its internal state for this case and will send the message successfully. It's a known issue and addressed via KIP-360 that provides a more detailed explanation: https://cwiki.apache.org/confluence/display/KAFKA/KIP-360%3A+Improve+handling+of+unknown+producer -Matthias On 10/12/19 12:18 PM, Jose Manuel Vega Monroy wrote: > Hi there, > > > > We are seeing WARN log traces from time to time in our Kafka producer: > > > > 2019-10-12 15:19:14:707 > WARN[org.apache.kafka.clients.producer.internals.Sender] [Producer > clientId=prdxpds21dsm001.prod.williamhill.plc] Got error produce > response with correlation id 4899937 on topic-partition OB_SP25-3, > retrying (0 attempts left). Error: UNKNOWN_PRODUCER_ID > > > > 2019-10-1220:02:21:686 WARN > [org.apache.kafka.clients.producer.internals.Sender] [Producer > clientId=prdxpds21dsm001.prod.williamhill.plc] Got errorproduce response > with correlation id 5354758 on topic-partition OB_SP87-16, retrying (0 > attempts left). Error:UNKNOWN_PRODUCER_ID > > > > Does it mean producer’s metadata was removed due to retention time, and > message is failed to be sent? > > > > I’m not sure but looking like happening since we enabled in producer: > > > > *enable.idempotence=true* > > > > Any idea? > > > > Thanks > > > > https://www.williamhillplc.com/content/signature/WHlogo.gif?width=180 > <http://www.williamhill.com/> > > https://www.williamhillplc.com/content/signature/senet.gif?width=180 > <http://www.whenthefunstops.co.uk/> > > > > *Jose Manuel Vega Monroy ** > **Java Developer / Software Developer Engineer in Test* > > Direct: +*0035 0 2008038 (Ext. 8038)* > Email: jose.mon...@williamhill.com <mailto:jose.mon...@williamhill.com> > > William Hill | 6/1 Waterport Place | Gibraltar | GX11 1AA > > > > > > > Confidentiality: The contents of this e-mail and any attachments transmitted with it are intended to be confidential to the intended recipient; and may be privileged or otherwise protected from disclosure. If you are not an intended recipient of this e-mail, do not duplicate or redistribute it by any means. Please delete it and any attachments and notify the sender that you have received it in error. This e-mail is sent by a William Hill PLC group company. The William Hill group companies include, among others, William Hill PLC (registered number 4212563), William Hill Organization Limited (registered number 278208), William Hill US HoldCo Inc, WHG (International) Limited (registered number 99191) and Mr Green Limited (registered number C43260). Each of William Hill PLC and William Hill Organization Limited is registered in England and Wales and has its registered office at 1 Bedford Avenue, London, WC1B 3AU, UK. William Hill U.S. HoldCo, Inc. is registered in Delaware and has its registered office at 1007 N. Orange Street, 9 Floor, Wilmington, New Castle County DE 19801 Delaware, United States of America. WHG (International) Limited is registered in Gibraltar and has its registered office at 6/1 Waterport Place, Gibraltar. Mr Green Limited is registered in Malta and has its registered office at Tagliaferro Business Centre, Level 7, 14 High Street, Sliema SLM 1549, Malta. Unless specifically indicated otherwise, the contents of this e-mail are subject to contract; and are not an official statement, and do not necessarily represent the views, of William Hill PLC, its subsidiaries or affiliated companies. Please note that neither William Hill PLC, nor its subsidiaries and affiliated companies can accept any responsibility for any viruses contained within this e-mail and it is your responsibility to scan any emails and their attachments. William Hill PLC, its subsidiaries and affiliated companies may monitor e-mail traffic data and also the content of e-mails for effective operation of the e-mail system, or for security, purposes.
