Martijn Visser created FLINK-35109:
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Summary: Drop support for Flink 1.17 and 1.18 in Flink Kafka
connector
Key: FLINK-35109
URL: https://issues.apache.org/jira/browse/FLINK-35109
Project: Flink
Issue Type: Technical Debt
Components: Connectors / Kafka
Reporter: Martijn Visser
Fix For: kafka-4.0.0
The Flink Kafka connector currently can't compile against Flink 1.20-SNAPSHOT.
An example failure can be found at
https://github.com/apache/flink-connector-kafka/actions/runs/8659822490/job/23746484721#step:15:169
The {code:java} TypeSerializerUpgradeTestBase{code} has had issues before, see
FLINK-32455. See also specifically the comment in
https://issues.apache.org/jira/browse/FLINK-32455?focusedCommentId=17739785&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17739785
Next to that, there's also FLINK-25509 which can only be supported with Flink
1.19 and higher.
So we should:
* Drop support for 1.17 and 1.18
* Refactor the Flink Kafka connector to use the new
{code:java}MigrationTest{code}
We will support the Flink Kafka connector for Flink 1.18 via the v3.1 branch;
this change will be a new v4.0 version with support for Flink 1.19 and the
upcoming Flink 1.20
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