tustvold opened a new pull request, #1588:
URL: https://github.com/apache/arrow-rs/pull/1588
**WIP and likely containing bugs, creating as draft for visibility that I'm
working on this**
# Which issue does this PR close?
Closes #993.
# Rationale for this change
Adds support for reading nested lists from parquet.
# What changes are included in this PR?
Reworks the ListArrayReader to handle nested repetition levels.
# Are there any user-facing changes?
This no longer ensures that nulls are zero-length, which currently causes
tests to fail due to https://github.com/apache/arrow-rs/issues/626. Code that
relies on this property, whilst incorrect, may break with this change
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