rok opened a new pull request, #7439:
URL: https://github.com/apache/arrow-rs/pull/7439
Closes #7320.
# Rationale for this change
The Parquet format allows encrypting some or all column data while keeping
footers in plaintext for compatibility with readers that don't support
encryption. See
[spec](https://parquet.apache.org/docs/file-format/data-pages/encryption/#55-plaintext-footer-mode).
Arrow-rs already supports reading plaintext footers and writing encrypted
parquet files and should also support writing parquet files with plaintext
footers.
# What changes are included in this PR?
# Are there any user-facing changes?
This now enables writing plaintext footers, while in current state
attempting to write a plaintext footer would throw an error.
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