Hi all – building Spark on my local machine with build/mvn clean package test
runs until it hits the JavaAPISuite where it hangs indefinitely. Through some
experimentation, I’ve narrowed it down to the following test:
/**
* Test for SPARK-3647. This test needs to use the maven-built assembly to
trigger the issue,
* since that's the only artifact where Guava classes have been relocated.
*/
@Test
public void testGuavaOptional() {
// Stop the context created in setUp() and start a local-cluster one, to
force usage of the
// assembly.
sc.stop();
JavaSparkContext localCluster = new
JavaSparkContext("local-cluster[1,1,512]", "JavaAPISuite");
try {
JavaRDD<Integer> rdd1 = localCluster.parallelize(Arrays.asList(1, 2, null),
3);
JavaRDD<Optional<Integer>> rdd2 = rdd1.map(
new Function<Integer, Optional<Integer>>() {
@Override
public Optional<Integer> call(Integer i) {
return Optional.fromNullable(i);
}
});
rdd2.collect();
} finally {
localCluster.stop();
}
}
If I remove this test, things work smoothly. Has anyone else seen this? Thanks.
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