mapleFU commented on code in PR #46532:
URL: https://github.com/apache/arrow/pull/46532#discussion_r2108617292
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cpp/src/parquet/arrow/reader.cc:
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@@ -451,8 +452,17 @@ class LeafReader : public ColumnReaderImpl {
field_(std::move(field)),
input_(std::move(input)),
descr_(input_->descr()) {
+ const auto type_id = field_->type()->id();
+ // If binary-like, RecordReader is able to read directly as the concrete
type
+ // so as to avoid offset limitations.
+ std::shared_ptr<DataType> type_for_reading =
Review Comment:
No for most cases, it's design for batch visiting data, just an un-important
minor optimization
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