Avoid relying on org.apache.parquet.format.RowGroup.getFile_offset #26064
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Description
Certain parquet writers like pyarrow can set this offset incorrectly.
That can lead to the parquet reader not idenitfying the row groups
within a split correctly. This code is changed to rely on first page
offset in ColumnChunk instead.
Additional context and related issues
Fixes #26058
Related to #24618
Newer versions of pyarrow (tested parquet-cpp-arrow version 20.0.0) don't have this problem, the file showing this problem is using
parquet-cpp-arrow version 5.0.0Release notes
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