Drop support for Flink 1.17, 1.18 and 1.19 - #7633
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### Why are the changes needed? Flink 1.17, 1.18 and 1.19 are EOL and were deprecated earlier (KYUUBI apache#7199, KYUUBI apache#7285), with their building support already removed. Kyuubi 1.13 drops the remaining support, making Flink 1.20 the minimum. Flink 2.0 is EOL, so it is marked deprecated. ### What changes are proposed? - Remove the flink-1.17/flink-1.18/flink-1.19 Maven profiles and their deprecation warning - Drop Flink 1.17/1.18/1.19 from the CI matrix - Clean up stale adaptation code that only existed for Flink < 1.20, including the FlinkResultSet reflection shim, the 4-arg DefaultContext.load branch, and >= "1.17" test guards - Deprecate Flink 2.0 at engine startup - Update docs to record the removal and deprecation ### How was this patch tested? Cross-version tested: engine compiled with Flink 1.20, run against a Flink 2.3.0 distribution; FlinkOperationSuite and FlinkOperationSuiteOnYarn passed 12/12. CI coverage: the flink-it matrix keeps Flink 1.20 (JDK 8) plus Flink 2.0/2.1/2.2/2.3 binary verification (JDK 17). Spotless and Scalastyle pass. ### Was this patch authored or co-authored using generative AI tooling? Assisted-by: DeepSeek V4 Pro
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Aug 14, 2026
FLINK-35525 (1.20.0) allows the kyuubi delegation token provider to pass tokens to the YARN AM, and Flink 1.20 is now the minimum supported version, so the temporary HADOOP_TOKEN_FILE workaround is no longer needed.
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thanks, merged to master |
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Why are the changes needed?
Flink 1.17, 1.18 and 1.19 are EOL and were deprecated earlier (KYUUBI #7199, KYUUBI #7285),
with their building support already removed. Kyuubi 1.13 drops the remaining support, making
Flink 1.20 the minimum. Flink 2.0 is EOL, so it is marked deprecated.
What changes are proposed?
FlinkResultSet reflection shim, the 4-arg DefaultContext.load branch, and >= "1.17" test guards
FLINK-35525 (1.20.0)
How was this patch tested?
Cross-version tested: engine compiled with Flink 1.20, run against a Flink 2.3.0 distribution;
FlinkOperationSuite and FlinkOperationSuiteOnYarn passed 12/12.
CI coverage: the flink-it matrix keeps Flink 1.20 (JDK 8) plus Flink 2.0/2.1/2.2/2.3
binary verification (JDK 17). Spotless and Scalastyle pass.
Was this patch authored or co-authored using generative AI tooling?
Assisted-by: DeepSeek V4 Pro