[SPARK-58280][ML][CONNECT] Estimate size of BucketedRandomProjectionLSH and Word2Vec models#57449
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July 23, 2026 02:58
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What changes were proposed in this pull request?
Adds explicit
estimatedSizeimplementations forBucketedRandomProjectionLSHModelandWord2VecModel.getSizeInBytes, including a null guard for the ML Connect constructor.Adds fitted-model regression tests in the corresponding algorithm suites, each with a 4 KiB upper bound.
Why are the changes needed?
The default reflection-based estimate can traverse substantially more state than the fitted model owns. Direct accounting keeps model-size estimation small, predictable, and focused on learned state.
Does this PR introduce any user-facing change?
No.
How was this patch tested?
JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64 build/sbt 'mllib/Test/compile'\n\n### Was this patch authored or co-authored using generative AI tooling?\n\nGenerated-by: Codex GPT-5