Martijn Visser created FLINK-41071:
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Summary: Upgrade Testcontainers to 1.21.4 in the Cassandra
connector to support Docker 29
Key: FLINK-41071
URL: https://issues.apache.org/jira/browse/FLINK-41071
Project: Flink
Issue Type: Bug
Components: Connectors / Cassandra
Reporter: Martijn Visser
Assignee: Martijn Visser
The Cassandra connector uses Testcontainers 1.20.2, which talks to Docker with
API version 1.32. Docker 29 dropped support for API versions below 1.40, so
every ITCase fails before a container starts:
{code}
Caused by: com.github.dockerjava.api.exception.BadRequestException: Status 400:
{"message":"client version 1.32 is too old. Minimum supported API version is
1.40, please upgrade your client to a newer version"}
{code}
The current GitHub runner image still has Docker 28.0.4, but ubuntu-latest
moves to Ubuntu 26 from October 19, 2026. We should upgrade to Testcontainers
1.21.4, like the Kafka and MongoDB connectors did.
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