jp0317 commented on code in PR #39818:
URL: https://github.com/apache/arrow/pull/39818#discussion_r1468337574
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cpp/src/parquet/column_reader.cc:
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@@ -1478,13 +1478,14 @@ class TypedRecordReader : public
TypedColumnReaderImpl<DType>,
// We skipped the levels by incrementing 'levels_position_'. For values
// we do not have a buffer, so we need to read them and throw them away.
// First we need to figure out how many present/not-null values there are.
- std::shared_ptr<::arrow::ResizableBuffer> valid_bits;
- valid_bits = AllocateBuffer(this->pool_);
-
PARQUET_THROW_NOT_OK(valid_bits->Resize(bit_util::BytesForBits(skipped_records),
- /*shrink_to_fit=*/true));
+ if (valid_bits_ == nullptr) {
+ valid_bits_ = AllocateBuffer(this->pool_);
+ }
+
PARQUET_THROW_NOT_OK(valid_bits_->Resize(bit_util::BytesForBits(skipped_records),
+ /*shrink_to_fit=*/true));
Review Comment:
edited, after a 2nd though, i think with the new changes it can just be
false, or does not really matter true or false
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