[SPARK-57844] Exclude Hadoop YARN classes from shadow jar#727
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dongjoon-hyun wants to merge 1 commit into
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[SPARK-57844] Exclude Hadoop YARN classes from shadow jar#727dongjoon-hyun wants to merge 1 commit into
dongjoon-hyun wants to merge 1 commit into
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peter-toth
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Jul 1, 2026
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Thank you, @peter-toth . I'm revisiting this area while clarifying the licenses. |
viirya
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Jul 1, 2026
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Thank you, @viirya ! |
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Merged to main |
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What changes were proposed in this pull request?
This PR excludes Hadoop YARN classes (
org/apache/hadoop/yarn/**) from the operator shadow jar by adding a class-path filter to theshadowJarblock inspark-operator/build.gradle.Note that the individual
org.apache.hadoop:hadoop-yarn-api,hadoop-yarn-client, andhadoop-yarn-commonartifacts are not present in the dependency graph. Spark'sspark-core/spark-kubernetespull in the shadedhadoop-client-apiuber-jar, which bundles the YARN classes internally. Therefore these classes are filtered at packaging time rather than excluded as Maven modules. This follows the existing precedent of excluding Hadoopwebapps/**(HDFS/YARN UI).Why are the changes needed?
The operator manages Spark applications on Kubernetes and never uses YARN. The bundled YARN classes are dead weight in the runtime classpath and shaded jar. Removing them drops 2,766 classes (~20 MB uncompressed) that originate from
hadoop-client-api.Does this PR introduce any user-facing change?
No.
How was this patch tested?
Pass the CIs.
Was this patch authored or co-authored using generative AI tooling?
Generated-by: Claude Opus 4.8