unpersist

Class: matlab.compiler.mlspark.RDD
Package: matlab.compiler.mlspark

Mark an RDD as nonpersistent, remove all blocks for it from memory and disk

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Syntax

unpersist(obj)

Description

unpersist(obj) marks input RDD object as nonpersistent and removes all blocks for it from memory and disk.

Input Arguments

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An input RDD, specified as an RDD object.

Examples

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Use the unpersist method to mark an RDD as nonpersistent.

%% 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);

%% unpersist
myFile = sc.textFile('airlinesmall.csv');
myFile.persist();
myFile.unpersist();

See Also

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Introduced in R2016b

MATLAB Compiler Documentation

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