parquet.thrift uses both row / record to refer to the same concept

As we discussed on the mailing list, parquet.thrift uses the terms Record and Row to mean the same thing

Using consistent terminology will reduce the potential for confusion

The consensus on the mailing list was to use the term "row"

Mailing list link: https://lists.apache.org/thread/0gxjk4tphxls0gcrc7lt775pf8s7gtz3