sidred opened a new pull request, #3531:
URL: https://github.com/apache/arrow-rs/pull/3531
# Which issue does this PR close?
Closes #3530
# Rationale for this change
Fix the row group total_byte_size of the parquet format. This is currently
set to the compressed size. As per the spec
https://github.com/apache/parquet-format/blob/613a1cf4475c662457a0fd81a894ce4709799e3b/src/main/thrift/parquet.thrift#L814
this should be the uncompressed size
# What changes are included in this PR?
update the parquet file row group to sum of uncompressed column sizes
# Are there any user-facing changes?
The row group size of parquet file will change and correctly reflect the sum
of the uncompressed column sizes
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