pitrou commented on code in PR #47741:
URL: https://github.com/apache/arrow/pull/47741#discussion_r2418794626
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cpp/src/parquet/decoder.cc:
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@@ -2082,9 +2082,12 @@ class DeltaByteArrayDecoderImpl : public
TypedDecoderImpl<DType> {
int64_t valid_bits_offset,
typename EncodingTraits<DType>::Accumulator* out,
int* out_num_values) {
- std::vector<ByteArray> values(num_values);
+ std::vector<ByteArray> values(num_values - null_count);
Review Comment:
Well, this was not a problem in itself, it was just allocating too much
memory :)
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