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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
import scala.collection.mutable.ArrayBuffer
import org.scalatest.{BeforeAndAfter, FunSuite}
import org.scalatest.mock.EasyMockSugar
import org.apache.spark.rdd.RDD
import org.apache.spark.executor.TaskMetrics
import org.apache.spark.storage._
// TODO: Test the CacheManager's thread-safety aspects
class CacheManagerSuite extends FunSuite with BeforeAndAfter with EasyMockSugar {
var sc : SparkContext = _
var blockManager: BlockManager = _
var cacheManager: CacheManager = _
var split: Partition = _
/** An RDD which returns the values [1, 2, 3, 4]. */
var rdd: RDD[Int] = _
before {
sc = new SparkContext("local", "test")
blockManager = mock[BlockManager]
cacheManager = new CacheManager(blockManager)
split = new Partition { override def index: Int = 0 }
rdd = new RDD[Int](sc, Nil) {
override def getPartitions: Array[Partition] = Array(split)
override val getDependencies = List[Dependency[_]]()
override def compute(split: Partition, context: TaskContext) = Array(1, 2, 3, 4).iterator
}
}
after {
sc.stop()
}
test("get uncached rdd") {
expecting {
blockManager.get(RDDBlockId(0, 0)).andReturn(None)
blockManager.put(RDDBlockId(0, 0), ArrayBuffer[Any](1, 2, 3, 4), StorageLevel.MEMORY_ONLY,
true).andStubReturn(Seq[(BlockId, BlockStatus)]())
}
whenExecuting(blockManager) {
val context = new TaskContext(0, 0, 0, interrupted = false, runningLocally = false,
taskMetrics = TaskMetrics.empty)
val value = cacheManager.getOrCompute(rdd, split, context, StorageLevel.MEMORY_ONLY)
assert(value.toList === List(1, 2, 3, 4))
}
}
test("get cached rdd") {
expecting {
blockManager.get(RDDBlockId(0, 0)).andReturn(Some(ArrayBuffer(5, 6, 7).iterator))
}
whenExecuting(blockManager) {
val context = new TaskContext(0, 0, 0, interrupted = false, runningLocally = false,
taskMetrics = TaskMetrics.empty)
val value = cacheManager.getOrCompute(rdd, split, context, StorageLevel.MEMORY_ONLY)
assert(value.toList === List(5, 6, 7))
}
}
test("get uncached local rdd") {
expecting {
// Local computation should not persist the resulting value, so don't expect a put().
blockManager.get(RDDBlockId(0, 0)).andReturn(None)
}
whenExecuting(blockManager) {
val context = new TaskContext(0, 0, 0, runningLocally = true, interrupted = false,
taskMetrics = TaskMetrics.empty)
val value = cacheManager.getOrCompute(rdd, split, context, StorageLevel.MEMORY_ONLY)
assert(value.toList === List(1, 2, 3, 4))
}
}
}
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