java - Do I need to install Apache Spark and/or Scala to run a jUnit? -


i new apache spark framework, trying setup first junit follows:

package com.sample.ccspark;  import com.holdenkarau.spark.testing.sharedjavasparkcontext; import org.apache.spark.api.java.javardd; import org.junit.test;  import java.util.list;  import static java.util.arrays.aslist; import static org.hamcrest.core.is.is; import static org.junit.assert.assertthat;  public class simpletest extends sharedjavasparkcontext {      @test     public void initializationworks()  {         list<integer> list = aslist(1, 2, 3, 4);         javardd<integer> rdd = jsc().parallelize(list);         assertthat(rdd.count(), is(list.size()));     } }

with following dependencies in pom.xml

    <dependency>         <groupid>com.holdenkarau</groupid>         <artifactid>spark-testing-base_2.11</artifactid>         <version>2.2.0_0.7.2</version>         <scope>test</scope>     </dependency>     <dependency>         <groupid>org.apache.spark</groupid>         <artifactid>spark-core_2.10</artifactid>         <version>2.2.0</version>     </dependency>

everything happily compiles, when running getting following exception:

exception in thread "dispatcher-event-loop-6" java.lang.noclassdeffounderror:  scala/runtime/abstractpartialfunction$mcvl$sp

i not have spark or scala installed locally yet, under impression testing framework should take care of dependencies. there missing here?

in artifacts names
<artifactid>spark-testing-base_2.11</artifactid> <artifactid>spark-core_2.10</artifactid>

the last number version of scala. guess should select 1 both cases.


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