marcin-krystianc commented on code in PR #50335:
URL: https://github.com/apache/arrow/pull/50335#discussion_r3665974219
##########
cpp/src/parquet/decoder.cc:
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@@ -2232,6 +2281,23 @@ class DeltaByteArrayFLBADecoder : public
DeltaByteArrayDecoderImpl<FLBAType>,
}
return decoded_values_size;
}
+
+ // Same internal decode as above, but copy the bytes contiguously into the
+ // caller's buffer instead of materializing per-value pointers.
Review Comment:
Let me think what it would take to implement the `DELTA_BYTE_ARRAY` decoder
that avoids all that overhead.
And whether it fits the current PR or better should go as another one.
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