union

R2026b

Class: matlab.compiler.mlspark.RDD
Namespace: matlab.compiler.mlspark

(To be removed) Return the set union of one RDD with another

matlab.compiler.mlspark.RDD.union will be removed in a future release. There is no replacement functionality. For more information, see Version History.

Syntax

result = union(obj1,obj2)


Description

result = union(obj1,obj2) returns elements that are the set union of obj1 and obj2.

Input Arguments

obj1 — First input RDD

RDD object

An input RDD, specified as a RDD object.

obj2 — Second input RDD

RDD object

An input RDD, specified as a RDD object.

Output Arguments

result — RDD containing the set union of the two input RDDs

RDD object

A pipelined RDD containing the set union of the two input RDDs, returned as a RDD object.

Examples

Set Union of Two RDDs

%% Connect to Spark
sparkProp = containers.Map({'spark.executor.cores'}, {'1'});
conf = matlab.compiler.mlspark.SparkConf('AppName','myApp', ...
                        'Master','local[1]','SparkProperties',sparkProp);
sc = matlab.compiler.mlspark.SparkContext(conf);

%% union
inRDD = sc.parallelize({'A','B'});
newRDD = inRDD.union(inRDD);  %{'A','B', 'A','B'}
viewRes = newRDD.collect()

Version History

Introduced in R2016b

R2026b: To be removed

Support for deploying applications using the MATLAB API for Spark™ will be removed in a future release. There is no replacement functionality.