This change enables support for DECIMALs backed by BYTE_ARRAYs on disk. It does this by creating a TransferFunctor routine that transforms a ByteArrayType to an ::arrow::Decimal128Type.
The routine does this by: 1. Creating an arrow::BinaryArray from the RecordReader's builder 2. Allocating a buffer for the arrow::Decimal128Array 3. Converting the big-endian bytes in each BinaryArray entry to two integers representing the high and low bits of each decimal value. [ Full content available at: https://github.com/apache/arrow/pull/2646 ] This message was relayed via gitbox.apache.org for [email protected]
