mutexed commented on issue #39964:
URL: https://github.com/apache/arrow/issues/39964#issuecomment-1931924027
Hello, I understood that this is the issue of lifetime of pointer. I changed
my func declaration to this:
```c++
arrow::Status GetReader(
const std::string& location,
std::unique_ptr<parquet::arrow::FileReader>* arrow_reader,
std::shared_ptr<arrow::RecordBatchReader>* rb_reader,
const size_t batch_size = 64 * 1024);
```
The secret is to declare
```c++
std::unique_ptr<parquet::arrow::FileReader> arrow_reader;
std::shared_ptr<arrow::RecordBatchReader> rb_reader;
```
out of scope of GetReader (in the top scope) and it works now as expected.
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