Describe the bug, including details regarding any error messages, version, and platform.

I write optional ints and read them using parquet::Int64Reader using
reader->ReadBatch(kBatchSizeOne, nullptr, nullptr, &tmp, &values_read)
(like it is in parquet::StreamReader)
And this method always returns 1(and shifts it's internal value index) as the result of values_read. But it should return 0 for nulls and 1 for non-empty values.
When i change nullptr to any pointer-to-value(and ignore result) everything works fine

I assume that the issue is here

Which is used in ReadBatch
Because if def_levels == nullptr that does not mean that the field is required

Component(s)

C++, Parquet