tustvold commented on code in PR #1995:
URL: https://github.com/apache/arrow-rs/pull/1995#discussion_r913749600
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parquet/src/column/reader.rs:
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@@ -163,26 +163,18 @@ where
}
}
- /// Reads a batch of values of at most `batch_size`.
+ /// Reads a batch of values of at most `batch_size`, returning a tuple
containing the
Review Comment:
The difference arises because if a column is repeated / nullable, the
corresponding level data is omitted. The result is that whilst there is still
the same number of levels, it technically won't read any level data
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