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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package spark
import org.scalatest.FunSuite
class BroadcastSuite extends FunSuite with LocalSparkContext {
test("basic broadcast") {
sc = new SparkContext("local", "test")
val list = List(1, 2, 3, 4)
val listBroadcast = sc.broadcast(list)
val results = sc.parallelize(1 to 2).map(x => (x, listBroadcast.value.sum))
assert(results.collect.toSet === Set((1, 10), (2, 10)))
}
test("broadcast variables accessed in multiple threads") {
sc = new SparkContext("local[10]", "test")
val list = List(1, 2, 3, 4)
val listBroadcast = sc.broadcast(list)
val results = sc.parallelize(1 to 10).map(x => (x, listBroadcast.value.sum))
assert(results.collect.toSet === (1 to 10).map(x => (x, 10)).toSet)
}
}
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