This topic describes how to use open source geospatial user-defined functions (UDFs) to analyze spatial data.

Prerequisites

  • Git is installed.
  • Maven is installed and environment variables are configured.
  • The MaxCompute client is installed.

    For more information about how to install the MaxCompute client, see Install and configure the MaxCompute client.

Background information

Apache Hive provides a set of open source geospatial UDFs. For more information, visit GitHub. MaxCompute allows you to directly use Hive UDFs, including Hive geospatial functions, in MaxCompute.

For more information about how to use Hive UDFs in MaxCompute, see Example of compatibility with Hive UDFs.
Note If you encounter an issue when you use UDFs, submit your issue on GitHub for help.

Step 1: Prepare a local UDF

  1. Obtain the URL to download the code package of geospatial UDFs.
    URL
  2. Open the Git command-line tool, and run one of the following commands to download the geospatial UDF code package for Hive 2.1.0 to your on-premises machine. Hive 2.1.0 corresponds to Hadoop 2.7.2.
    Example: 
    git clone https://github.com/Esri/spatial-framework-for-hadoop.git

-- Or

git clone -b "v2.1.0" --single-branch git@github.com:Esri/spatial-framework-for-hadoop.git
  3. Run the following commands to build a project by using Maven:
    Example: 
    cd spatial-framework-for-hadoop

mvn clean package -DskipTests -P java-8,hadoop-2.7,hive-2.1
  4. Run the following command to copy the created JAR package. This JAR package contains all methods of the open source geospatial UDFs.
    Example: 
    cp hive/target/spatial-sdk-hive-2.1.1-SNAPSHOT.jar .../spatial-sdk-hive.jar
  5. Run one of the following commands to download the JAR packages that the project depends on: 
    wget https://repo1.maven.org/maven2/com/esri/geometry/esri-geometry-api/2.2.0/esri-geometry-api-2.2.0.jar .../esri-geometry-api.jar

-- The preceding command is equivalent to the following command: 

cp ~/.m2/repository/com/esri/geometry/esri-geometry-api/2.2.0/esri-geometry-api-2.2.0.jar .../esri-geometry-api.jar

Step 2: Register UDFs with MaxCompute

  1. Run the following commands on the MaxCompute client to upload the two JAR packages that the project depends on to the project:
    For more information about how to add resources, see Resource operations. 
    add jar esri-geometry-api.jar;
add jar spatial-sdk-hive.jar;
  2. Run the following commands to register the UDFs: 
    CREATE FUNCTION ST_Aggr_ConvexHull  AS  'com.esri.hadoop.hive.ST_Aggr_ConvexHull' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Aggr_Intersection    AS  'com.esri.hadoop.hive.ST_Aggr_Intersection'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Aggr_Union   AS  'com.esri.hadoop.hive.ST_Aggr_Union'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Area AS  'com.esri.hadoop.hive.ST_Area'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsBinary AS  'com.esri.hadoop.hive.ST_AsBinary'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsGeoJson    AS  'com.esri.hadoop.hive.ST_AsGeoJson'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsJson   AS  'com.esri.hadoop.hive.ST_AsJson'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsShape  AS  'com.esri.hadoop.hive.ST_AsShape' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_AsText   AS  'com.esri.hadoop.hive.ST_AsText'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Bin  AS  'com.esri.hadoop.hive.ST_Bin' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_BinEnvelope  AS  'com.esri.hadoop.hive.ST_BinEnvelope' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Boundary AS  'com.esri.hadoop.hive.ST_Boundary'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Buffer   AS  'com.esri.hadoop.hive.ST_Buffer'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Centroid AS  'com.esri.hadoop.hive.ST_Centroid'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Contains AS  'com.esri.hadoop.hive.ST_Contains'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_ConvexHull   AS  'com.esri.hadoop.hive.ST_ConvexHull'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_CoordDim AS  'com.esri.hadoop.hive.ST_CoordDim'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Crosses  AS  'com.esri.hadoop.hive.ST_Crosses' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Difference   AS  'com.esri.hadoop.hive.ST_Difference'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Dimension    AS  'com.esri.hadoop.hive.ST_Dimension'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Disjoint AS  'com.esri.hadoop.hive.ST_Disjoint'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Distance AS  'com.esri.hadoop.hive.ST_Distance'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_EndPoint AS  'com.esri.hadoop.hive.ST_EndPoint'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Envelope AS  'com.esri.hadoop.hive.ST_Envelope'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_EnvIntersects    AS  'com.esri.hadoop.hive.ST_EnvIntersects'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Equals   AS  'com.esri.hadoop.hive.ST_Equals'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_ExteriorRing AS  'com.esri.hadoop.hive.ST_ExteriorRing'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeodesicLengthWGS84  AS  'com.esri.hadoop.hive.ST_GeodesicLengthWGS84' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomCollection   AS  'com.esri.hadoop.hive.ST_GeomCollection'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Geometry AS  'com.esri.hadoop.hive.ST_Geometry'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeometryN    AS  'com.esri.hadoop.hive.ST_GeometryN'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeometryType AS  'com.esri.hadoop.hive.ST_GeometryType'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromGeoJson  AS  'com.esri.hadoop.hive.ST_GeomFromGeoJson' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromJson AS  'com.esri.hadoop.hive.ST_GeomFromJson'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromShape    AS  'com.esri.hadoop.hive.ST_GeomFromShape'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromText AS  'com.esri.hadoop.hive.ST_GeomFromText'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_GeomFromWKB  AS  'com.esri.hadoop.hive.ST_GeomFromWKB' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_InteriorRingN    AS  'com.esri.hadoop.hive.ST_InteriorRingN'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Intersection AS  'com.esri.hadoop.hive.ST_Intersection'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Intersects   AS  'com.esri.hadoop.hive.ST_Intersects'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Is3D AS  'com.esri.hadoop.hive.ST_Is3D'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsClosed AS  'com.esri.hadoop.hive.ST_IsClosed'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsEmpty  AS  'com.esri.hadoop.hive.ST_IsEmpty' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsMeasured   AS  'com.esri.hadoop.hive.ST_IsMeasured'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsRing   AS  'com.esri.hadoop.hive.ST_IsRing'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_IsSimple AS  'com.esri.hadoop.hive.ST_IsSimple'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Length   AS  'com.esri.hadoop.hive.ST_Length'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_LineFromWKB  AS  'com.esri.hadoop.hive.ST_LineFromWKB' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_LineString   AS  'com.esri.hadoop.hive.ST_LineString'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_M    AS  'com.esri.hadoop.hive.ST_M'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MaxM AS  'com.esri.hadoop.hive.ST_MaxM'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MaxX AS  'com.esri.hadoop.hive.ST_MaxX'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MaxY AS  'com.esri.hadoop.hive.ST_MaxY'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MaxZ AS  'com.esri.hadoop.hive.ST_MaxZ'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MinM AS  'com.esri.hadoop.hive.ST_MinM'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MinX AS  'com.esri.hadoop.hive.ST_MinX'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MinY AS  'com.esri.hadoop.hive.ST_MinY'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MinZ AS  'com.esri.hadoop.hive.ST_MinZ'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MLineFromWKB AS  'com.esri.hadoop.hive.ST_MLineFromWKB'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MPointFromWKB    AS  'com.esri.hadoop.hive.ST_MPointFromWKB'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MPolyFromWKB AS  'com.esri.hadoop.hive.ST_MPolyFromWKB'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MultiLineString  AS  'com.esri.hadoop.hive.ST_MultiLineString' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MultiPoint   AS  'com.esri.hadoop.hive.ST_MultiPoint'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_MultiPolygon AS  'com.esri.hadoop.hive.ST_MultiPolygon'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_NumGeometries    AS  'com.esri.hadoop.hive.ST_NumGeometries'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_NumInteriorRing  AS  'com.esri.hadoop.hive.ST_NumInteriorRing' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_NumPoints    AS  'com.esri.hadoop.hive.ST_NumPoints'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Overlaps AS  'com.esri.hadoop.hive.ST_Overlaps'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Point    AS  'com.esri.hadoop.hive.ST_Point'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_PointFromWKB AS  'com.esri.hadoop.hive.ST_PointFromWKB'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_PointN   AS  'com.esri.hadoop.hive.ST_PointN'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_PointZ   AS  'com.esri.hadoop.hive.ST_PointZ'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_PolyFromWKB  AS  'com.esri.hadoop.hive.ST_PolyFromWKB' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Polygon  AS  'com.esri.hadoop.hive.ST_Polygon' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Relate   AS  'com.esri.hadoop.hive.ST_Relate'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_SetSRID  AS  'com.esri.hadoop.hive.ST_SetSRID' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_SRID AS  'com.esri.hadoop.hive.ST_SRID'    USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_StartPoint   AS  'com.esri.hadoop.hive.ST_StartPoint'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_SymmetricDiff    AS  'com.esri.hadoop.hive.ST_SymmetricDiff'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Touches  AS  'com.esri.hadoop.hive.ST_Touches' USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Union    AS  'com.esri.hadoop.hive.ST_Union'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Within   AS  'com.esri.hadoop.hive.ST_Within'  USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_X    AS  'com.esri.hadoop.hive.ST_X'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Y    AS  'com.esri.hadoop.hive.ST_Y'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';
CREATE FUNCTION ST_Z    AS  'com.esri.hadoop.hive.ST_Z'   USING 'spatial-sdk-hive.jar,esri-geometry-api.jar';

Step 3: Test a UDF

Submit an SQL statement on the MaxCompute client to test whether a UDF can be normally used. Example: 
-- Enable Hive compatibility and submit a UDF for testing. 

set odps.sql.hive.compatible=true;

select ST_AsText(ST_Point(1, 2));
The following command output indicates that the UDF is registered with MaxCompute. 
+-----+

| _c0 |

+-----+

| POINT (1 2) |

+-----+