Martijn Visser created FLINK-41393:
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Summary: Remove the Hadoop 2 compatibility code
Key: FLINK-41393
URL: https://issues.apache.org/jira/browse/FLINK-41393
Project: Flink
Issue Type: Technical Debt
Components: Connectors / Hadoop Compatibility
Reporter: Martijn Visser
Assignee: Martijn Visser
With FLINK-41378 merged, the minimum Hadoop version is 3.4.3. flink-yarn still
reaches Hadoop 2 APIs through reflection
(ApplicationSubmissionContextReflector,
RegisterApplicationMasterResponseReflector, ContainerRequestReflector,
ResourceInformationReflector), and flink-hadoop-fs keeps isMinHadoopVersion(2,
7) checks. YarnFileStageTestS3ITCase#testRecursiveUploadForYarnS3n can never
run and YarnTestUtils.isHadoopVersionGreaterThanOrEquals is unused. The docs
still mention Hadoop < 2.7 for the FileSink and 2.10+ or 3.1+ for GPU
scheduling. We should remove all of these.
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