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Tim commented on FLINK-12104: ----------------------------- I can confirm that this fix works. > Flink Kafka fails with Incompatible KafkaProducer version / > NoSuchFieldException sequenceNumbers > ------------------------------------------------------------------------------------------------ > > Key: FLINK-12104 > URL: https://issues.apache.org/jira/browse/FLINK-12104 > Project: Flink > Issue Type: Bug > Components: Connectors / Kafka > Affects Versions: 1.7.2 > Reporter: Tim > Priority: Major > > FlinkKafkaProducer (in flink-connector-kafka-0.11) tries to access a field > named `sequenceNumbers` from the KafkaProducer's TransactionManager. You can > find this line on the [master branch > here|[https://github.com/apache/flink/blob/d6be68670e661091d94a3c65a2704d52fc0e827c/flink-connectors/flink-connector-kafka-0.11/src/main/java/org/apache/flink/streaming/connectors/kafka/internal/FlinkKafkaProducer.java#L197].] > > {code:java} > Object transactionManager = getValue(kafkaProducer, "transactionManager"); > ... > Object sequenceNumbers = getValue(transactionManager, "sequenceNumbers"); > {code} > > However, the Kafka TransactionManager no longer has a "sequenceNumbers" > field. This was changed back on 9/14/2017 (KAFKA-5494) in an effort to > support multiple inflight requests while still guaranteeing idempotence. See > [commit diff > here|[https://github.com/apache/kafka/commit/5d2422258cb975a137a42a4e08f03573c49a387e#diff-f4ef1afd8792cd2a2e9069cd7ddea630].] > Subsequently when Flink tries to "recoverAndCommit" (see > FlinkKafkaProducer011) it fails with a "NoSuchFieldException: > sequenceNumbers", followed by a "Incompatible KafkaProducer version". > Given that the KafkaProducer used is so old (this change was made almost two > years ago) are there any plans of upgrading? Or - are there some known > compatibility issues that prevent Flink/Kafka connector from doing so? > -- This message was sent by Atlassian JIRA (v7.6.3#76005)