public static Pair<Schema,ArrowWritableRecordBatch> readFromFile(File input) throws IOException {
        return readFromFile(new FileInputStream(input));
    }
public static Pair < Schema , ArrowWritableRecordBatch > readFromFile ( File input ) throws IOException { return readFromFile ( new FileInputStream ( input ) ) ; }
Read a datavec schema and record set
from the given arrow file.
@param input the input to read
@return the associated datavec schema and record