bench: add parquet_row_filter_skip suite for the fully-matched RowFilter skip

[zhuqi-lucas]

Which issue does this PR close?

• Part of perf(parquet): skip RowFilter on statically fully-matched row groups #23696 — a benchmark that mechanistically exercises the per-RG fully-matched RowFilter skip.

Rationale for this change

#23696 adds a per-row-group fully-matched RowFilter skip, but none of the existing benchmarks exercise it:

• sort_tpch / tpch don't enable pushdown_filters by default, so there is no RowFilter to skip;
• ClickBench's URL LIKE … / equality predicates rarely make a row group's min/max fall entirely inside the satisfying range, so fully-matched RGs are rare.

As raised in review (we should verify the optimization improves something mechanistically, otherwise add a benchmark first), this adds a suite that necessarily triggers the skip.

What changes are included in this PR?

A new sql_benchmarks/parquet_row_filter_skip/ suite:

• The load SQL enables pushdown_filters and COPYs a clustered Parquet file — a fixed-width, zero-padded, monotonically increasing string key (skey) so each row group holds a disjoint, sorted range — plus 14 payload columns.
• The query applies a low-selectivity range filter (skey >= '0000100000', skey not projected). The first row group straddles the threshold; every later RG is fully matched by statistics, so the per-row RowFilter is skipped on the fully-matched run (and skey isn't decoded there).
• bench.sh integration: ./bench.sh run parquet_row_filter_skip, data generated inline by the load SQL. Knobs: PRED_ROWS (row count), RG_SIZE (parquet row-group size).

Are these changes tested?

Smoke-tested locally via cargo bench --bench sql -- --test.

Local A/B (main vs #23696, 10M rows / 10 RGs / skey >= '0000100000'):

• 9 of 10 row groups fully matched → row_filter_skipped_fully_matched=9;
• ~18% faster with the optimization (main ~0.143s → branch ~0.117s); an int64-key variant is ~12%.

Once this lands, run benchmark parquet_row_filter_skip will compare any PR (e.g. #23696) against main in CI.

Are there any user-facing changes?

No — benchmark only.

[Copilot]

Pull request overview

Adds a new DataFusion SQL benchmark suite intended to mechanically exercise the Parquet “fully-matched row group” RowFilter skip optimization (#23696) by generating a clustered Parquet file and running a low-selectivity range predicate that makes most row groups fully matched by statistics.

Changes:

• Introduces a new parquet_row_filter_skip benchmark suite (suite metadata, template, load SQL, query SQL, and benchmark entry).
• Generates clustered Parquet data inline via COPY ... STORED AS PARQUET with configurable row count (PRED_ROWS) and row-group size (RG_SIZE).
• Integrates the suite into benchmarks/bench.sh for ./bench.sh run parquet_row_filter_skip.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
benchmarks/sql_benchmarks/parquet_row_filter_skip/scratch/.gitignore	Ignores generated Parquet artifacts in the suite scratch directory.
benchmarks/sql_benchmarks/parquet_row_filter_skip/queries/skip/q01.sql	Defines the range-filter query intended to trigger fully-matched RG skips.
benchmarks/sql_benchmarks/parquet_row_filter_skip/parquet_row_filter_skip.suite	Registers the new benchmark suite and documents its intent/knobs.
benchmarks/sql_benchmarks/parquet_row_filter_skip/parquet_row_filter_skip.benchmark.template	Adds a reusable benchmark template (load/assert/run/cleanup).
benchmarks/sql_benchmarks/parquet_row_filter_skip/load/clustered.sql	Generates clustered Parquet data and creates an external table over it.
benchmarks/sql_benchmarks/parquet_row_filter_skip/init/cleanup.sql	Drops the benchmark table between runs.
benchmarks/sql_benchmarks/parquet_row_filter_skip/benchmarks/skip/q01.benchmark	Wires the query+dataset into a runnable benchmark.
benchmarks/bench.sh	Adds parquet_row_filter_skip to the benchmark list and run dispatch.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.17%. Comparing base (9b3b518) to head (811dfb0).
⚠️ Report is 20 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #24328      +/-   ##
==========================================
- Coverage   81.29%   81.17%   -0.13%     
==========================================
  Files        1110     1109       -1     
  Lines      385336   388038    +2702     
  Branches   385336   388038    +2702     
==========================================
+ Hits       313261   314974    +1713     
- Misses      53594    54517     +923     
- Partials    18481    18547      +66     

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