I wrote ST_Project following the same syntax as hive esri spatial function, but the result is the not exactly the same

[fragrantic]

import org.apache.hadoop.hive.ql.exec.UDF;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.hive.serde2.io.DoubleWritable;
import com.esri.core.geometry.ogc.OGCGeometry;
import com.esri.core.geometry.ogc.OGCPoint;
import com.esri.hadoop.hive.GeometryUtils;
import com.esri.core.geometry.Point;

public class ST_Project extends UDF {
final DoubleWritable resultDouble = new DoubleWritable();

static double EARTH_RADIUS = 6378137.0;

static double degToRad(double deg) {
return (deg * Math.PI) / 180.0;
}

static double radToDeg(double rad) {
return (rad * 180.0) / Math.PI;
}

static double x;
static double y;

public static BytesWritable evaluate(BytesWritable geom, double distance, double bearing) {

if (geom == null) {
	return null;
}

try {

double angular = distance / EARTH_RADIUS;
double bearingRad = degToRad(bearing);
OGCGeometry Geometry = GeometryUtils.geometryFromEsriShape(geom);
OGCPoint pt1 = (OGCPoint)Geometry;		
double latRad = degToRad(((OGCPoint) pt1).X());
double lonRad = degToRad(((OGCPoint) pt1).Y());
double a = Math.sin((latRad));
double b = Math.cos((angular));
double c = Math.cos((latRad));
double d = Math.sin((angular));
double e = Math.cos((bearingRad));

double lat = Math.asin(((a * b) + (c * d * e)));

double f = Math.sin((bearingRad));
double h = Math.sin((lat));
double i = (f * d * c);
double j = (b - (a * h));

double lon = lonRad + Math.atan2(i, j);

x = radToDeg(lon);
y = radToDeg(lat);

DoubleWritable x1 = new DoubleWritable(x);
DoubleWritable y1 = new DoubleWritable(y);

Point stPt = new Point(y1.get(),x1.get());

BytesWritable ret = GeometryUtils.geometryToEsriShapeBytesWritable(OGCGeometry.createFromEsriGeometry(stPt, null));


return ret;
} catch (Exception e) {
    return null;} } }

[randallwhitman]

The code posted in the description on 2018/05/15 appears to have calculations for a sphere, which is a fast approximation, but not entirely accurate, for an oblate spheroid such as the Earth.