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https://issues.apache.org/jira/browse/SPARK-60676?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-60676:
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    Labels: pull-request-available  (was: )

> Convert pandas inputs through columnar Arrow in Spark Connect Rust
> ------------------------------------------------------------------
>
>                 Key: SPARK-60676
>                 URL: https://issues.apache.org/jira/browse/SPARK-60676
>             Project: Spark
>          Issue Type: Improvement
>          Components: Connect
>    Affects Versions: connect-rust-4.3.0
>            Reporter: DB Tsai
>            Assignee: DB Tsai
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: connect-rust-4.3.0
>
>
> The Rust Python client currently converts pandas DataFrame input through 
> Python row objects. In the frozen client-only benchmark, a prepared 1,000,000 
> x 3 int64 DataFrame takes about 1166.75 ms versus 6.71 ms for the official 
> Python client, and sampled peak RSS is about 852 versus 212 MiB. Investigate 
> and introduce a columnar Arrow fast path, preserving explicit/inferred 
> schemas, integer precision, nulls, temporal semantics, and fallback 
> compatibility. Reuse the Arrow Table input work in PR #118 if appropriate and 
> disclose any dependency. Validate with unchanged public-API benchmark cases, 
> value/schema checks and regression guards. Baseline Rust: d884e347452c; 
> harness: dbtsai/pyspark-connect-benchmark at 1bbdec9f3665. This ticket is for 
> the pandas input path, not Arrow Table support already tracked by SPARK-60675.



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