Java SDK: Clearer error when a task class cannot be instantiated - #69827
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Sorry that I didn't notice the docs issue in the last review. LGTM after resolving this change.
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Should be good after fixing a couple of nits.
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Here're the final nits caught by Codex that make sense to me before merge. Would appreciate to address them when you have a moment, thanks.
Signed-off-by: PoAn Yang <payang@apache.org>
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@jason810496 Thanks for the review and suggestion! I address all comments. |
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Why
Taskclass without a public no-argument constructor or a non-static inner class fails with a genericError executing taskplus a raw reflection trace, which steering Dag authors toward debuggingexecute()logic that never ran.How
TaskRunner.runTask: instantiation failures now logCannot instantiate task class. A task class must be concrete and declare a public no-argument constructorwith ataskClassfield.e.printStackTrace(). The structured log record already carries the full trace.java.rst.Verification
./gradlew :sdk:test --tests "org.apache.airflow.sdk.execution.TaskTest"E2E_TEST_MODE=java_sdk uv run --project airflow-e2e-tests pytest "tests/airflow_e2e_tests/java_sdk_tests/test_java_sdk_dag.py::TestJavaSDKUninstantiableTask" -xvsWas generative AI tooling used to co-author this PR?
{pr_number}.significant.rst, in airflow-core/newsfragments. You can add this file in a follow-up commit after the PR is created so you know the PR number.