wgtmac commented on code in PR #39844:
URL: https://github.com/apache/arrow/pull/39844#discussion_r1470625648
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cpp/src/parquet/encoding.cc:
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@@ -2411,7 +2414,11 @@ class DeltaBitPackDecoder : public DecoderImpl, virtual
public TypedDecoder<DTyp
void SetData(int num_values, const uint8_t* data, int len) override {
// num_values is equal to page's num_values, including null values in this
page
this->num_values_ = num_values;
- decoder_ = std::make_shared<::arrow::bit_util::BitReader>(data, len);
+ if (decoder_ == nullptr) {
Review Comment:
What about a separate patch for this?
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