mapleFU commented on code in PR #37874:
URL: https://github.com/apache/arrow/pull/37874#discussion_r1341268505
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cpp/src/parquet/encoding.cc:
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@@ -3382,6 +3385,17 @@ class DeltaByteArrayDecoderImpl : public DecoderImpl,
virtual public TypedDecode
if (ARROW_PREDICT_FALSE(static_cast<size_t>(prefix_len_ptr[i]) >
prefix.length())) {
throw ParquetException("prefix length too large in DELTA_BYTE_ARRAY");
}
+ if (prefix_len_ptr[i] == 0) {
Review Comment:
You can refer to here for detail:
https://github.com/apache/parquet-format/blob/master/Encodings.md#delta-strings-delta_byte_array--7
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