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Posted to reviews@spark.apache.org by "zhengruifeng (via GitHub)" <gi...@apache.org> on 2026/09/01 15:17:07 UTC
[PR] [SPARK-59152][ML] Create CountVectorizer broadcast per transform [spark]
zhengruifeng opened a new pull request, #58452:
URL: https://github.com/apache/spark/pull/58452
### What changes were proposed in this pull request?
This PR creates the `CountVectorizerModel` dictionary and its broadcast for each `transform` call
instead of caching the broadcast on the model.
### Why are the changes needed?
The dictionary broadcast is transformation-only execution state. Retaining it on the model keeps the
broadcast alive for the model's lifetime and ties later transformations to the `SparkContext` used by
the first transformation. A transform-scoped broadcast follows the lifecycle of the returned lazy
DataFrame and matches the other explicit inference broadcasts in `org.apache.spark.ml`.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
No tests were added because this is an internal broadcast lifecycle change and the transformation
logic is unchanged. The patch was checked with `git diff --check` and source line-length and
non-ASCII scans.
### Was this patch authored or co-authored using generative AI tooling?
Generated-by: OpenAI Codex (GPT-5)
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Re: [PR] [SPARK-59152][ML] Create CountVectorizer broadcast per transform [spark]
Posted by "zhengruifeng (via GitHub)" <gi...@apache.org>.
zhengruifeng commented on PR #58452:
URL: https://github.com/apache/spark/pull/58452#issuecomment-5502604875
**Merge Summary:**
- merged into branch-4.x https://github.com/apache/spark/commit/5ae05cac5d65e4cf44f363adaf8d3ce7646979e6
*Posted by `merge_spark_pr.py`*
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Re: [PR] [SPARK-59152][ML] Create CountVectorizer broadcast per transform [spark]
Posted by "zhengruifeng (via GitHub)" <gi...@apache.org>.
zhengruifeng closed pull request #58452: [SPARK-59152][ML] Create CountVectorizer broadcast per transform
URL: https://github.com/apache/spark/pull/58452
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Re: [PR] [SPARK-59152][ML] Create CountVectorizer broadcast per transform [spark]
Posted by "zhengruifeng (via GitHub)" <gi...@apache.org>.
zhengruifeng commented on PR #58452:
URL: https://github.com/apache/spark/pull/58452#issuecomment-5502599866
**Merge Summary:**
- merged into master https://github.com/apache/spark/commit/065397779ce409996abed999e1d6b46ee98a6c34
*Posted by `merge_spark_pr.py`*
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