alamb commented on a change in pull request #325:
URL: https://github.com/apache/arrow-rs/pull/325#discussion_r637135868
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File path: parquet/src/encodings/decoding.rs
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@@ -427,6 +425,7 @@ impl<T: DataType> DeltaBitPackDecoder<T> {
);
assert!(loaded == self.values_current_mini_block);
} else {
+ self.deltas_in_mini_block.clear();
Review comment:
I don't understand the need for this change -- was calling `clear()` a
major bottleneck? Or was it having to reinitialize the entire
`deltas_in_mini_block` to `default()` in the `self.use_batch` branch?
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