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branch-4.1: [feat](tvf) add Parquet metadata TVF (#58972)(#60938)(#56603) - #61446
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Expose Parquet file metadata via a table-valued function for inspection and debugging. - Add a Parquet metadata TVF so users can query Parquet file metadata via SQL. - Backend adds a Parquet metadata reader and scan path; frontend wires the TVF definition. - Enables easy inspection of partitions/row groups/column stats to aid troubleshooting.
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…kets (apache#60938) ## Summary - adjust `test_parquet_meta_tvf` S3-mode checks to compare only stable columns - avoid asserting `file_name` / full S3 URI fields that vary by pipeline bucket - update the corresponding `.out` baseline for the changed query projections ## Why Different CI pipelines may use different bucket names, which causes false failures when full URI/file name columns are compared. ## Test - attempted: `./run-regression-test.sh --run -f external_table_p0/tvf/test_parquet_meta_tvf -forceGenOut` - in this environment it failed with S3 `FORBIDDEN` while reading regression parquet files
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…pache#56603) go through whole be/ and find all const_cast Issue Number: apache#55057 Problem Summary: 1. remove useless const_cast 2. explain why using const_cast does not result in undefined behavior 3. don't modify some const_cast (1) some code in DBUG_EXECUTE_IF or test file (2) underlying data structures, such as cow (3) const_cast<const T*>
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) (#61474) Replacement for #61446 because the original PR head branch could not be updated from this environment. This branch contains: - [feat] add Parquet metadata TVF (#58972) - [fix](regression) stabilize parquet_meta tvf assertions across s3 buckets (#60938) - [fix] remove useless const_cast and explain const_cast for vec (4) (#56603) - [fix] fix parquet metadata TVF compile on branch-4.1 Please review this PR instead of #61446. --------- Co-authored-by: admiring_xm <[email protected]>
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bp #58972 #60938 #56603