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Signed-off-by: Laura Couto <laurarccouto@gmail.com>
lrcouto
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merelcht
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Oct 30, 2026
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Description
The nightly kedro-datasets unit tests fail on Ubuntu whenever a job lands on the new
ubuntu-26.04runner image, whichubuntu-latestis gradually moving to.The workflow doesn't pin a JDK, so Spark uses the image's newer default Java (24+). On those versions, Hadoop's
UserGroupInformation.getCurrentUserthrowsUnsupportedOperationException: getSubject is not supported, the Spark JVM never starts, and 4 doctests fail (ManagedTableDataset,DeltaTableDataset,SparkDataset,SparkDatasetV2). The same failure happened in 4 attempts in, so it isn't flakiness.Development notes
actions/setup-java@v4step (Temurin 17) to.github/workflows/unit-tests.yml. It only runs for kedro-datasets on Linux, since Windows runstest-no-spark.ubuntu-26.04runner.