sahuagin commented on code in PR #9787:
URL: https://github.com/apache/arrow-rs/pull/9787#discussion_r3124932976
##########
parquet/src/encodings/decoding.rs:
##########
@@ -847,6 +847,30 @@ where
self.values_left -= 1;
}
+ // Terminal skip: caller is discarding all remaining values on this
page.
+ // last_value will never be read again, so we can use O(1) arithmetic
+ // skips (BitReader::skip) instead of decoding through get_batch.
+ let terminal = to_skip >= self.values_left + skip;
Review Comment:
I can take a look a bit later this evening.
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