HippoBaro commented on code in PR #9653:
URL: https://github.com/apache/arrow-rs/pull/9653#discussion_r3054298913
##########
parquet/src/encodings/rle.rs:
##########
@@ -122,6 +122,27 @@ impl RleEncoder {
bit_packed_max_size.max(rle_max_size)
}
+ /// Returns `true` if the encoder is currently in RLE accumulation mode
+ /// for the given value (i.e., `repeat_count > 8` and `current_value ==
value`).
+ ///
+ /// When this returns `true`, callers may use
[`extend_run`](Self::extend_run)
+ /// to add more repetitions without per-element overhead.
+ #[inline]
+ pub fn is_accumulating(&self, value: u64) -> bool {
+ self.repeat_count > 8 && self.current_value == value
Review Comment:
Also, c891c35848f530909bda363aeccef0e01e8b6c68 introduces a new constant
`BIT_PACK_GROUP_SIZE` as requested, and also swaps the leftover literals which
referred to the count of bits in a byte with `u8::BITS` one from the std as
needed.
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