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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 org.apache.spark.rdd
import org.scalatest.FunSuite
import org.apache.spark.{Partition, SharedSparkContext, TaskContext}
class PartitionPruningRDDSuite extends FunSuite with SharedSparkContext {
test("Pruned Partitions inherit locality prefs correctly") {
val rdd = new RDD[Int](sc, Nil) {
override protected def getPartitions = {
Array[Partition](
new TestPartition(0, 1),
new TestPartition(1, 1),
new TestPartition(2, 1))
}
def compute(split: Partition, context: TaskContext) = {
Iterator()
}
}
val prunedRDD = PartitionPruningRDD.create(rdd, _ == 2)
assert(prunedRDD.partitions.length == 1)
val p = prunedRDD.partitions(0)
assert(p.index == 0)
assert(p.asInstanceOf[PartitionPruningRDDPartition].parentSplit.index == 2)
}
test("Pruned Partitions can be unioned ") {
val rdd = new RDD[Int](sc, Nil) {
override protected def getPartitions = {
Array[Partition](
new TestPartition(0, 4),
new TestPartition(1, 5),
new TestPartition(2, 6))
}
def compute(split: Partition, context: TaskContext) = {
List(split.asInstanceOf[TestPartition].testValue).iterator
}
}
val prunedRDD1 = PartitionPruningRDD.create(rdd, _ == 0)
val prunedRDD2 = PartitionPruningRDD.create(rdd, _ == 2)
val merged = prunedRDD1 ++ prunedRDD2
assert(merged.count() == 2)
val take = merged.take(2)
assert(take.apply(0) == 4)
assert(take.apply(1) == 6)
}
}
class TestPartition(i: Int, value: Int) extends Partition with Serializable {
def index: Int = i
def testValue: Int = this.value
}
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