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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.storage
import org.mockito.Matchers
import org.mockito.Mockito._
import org.scalatest.mock.MockitoSugar
import org.apache.spark.SparkFunSuite
import org.apache.spark.memory.MemoryMode.ON_HEAP
import org.apache.spark.storage.memory.{MemoryStore, PartiallyUnrolledIterator}
class PartiallyUnrolledIteratorSuite extends SparkFunSuite with MockitoSugar {
test("join two iterators") {
val unrollSize = 1000
val unroll = (0 until unrollSize).iterator
val restSize = 500
val rest = (unrollSize until restSize + unrollSize).iterator
val memoryStore = mock[MemoryStore]
val joinIterator = new PartiallyUnrolledIterator(memoryStore, ON_HEAP, unrollSize, unroll, rest)
// Firstly iterate over unrolling memory iterator
(0 until unrollSize).foreach { value =>
assert(joinIterator.hasNext)
assert(joinIterator.hasNext)
assert(joinIterator.next() == value)
}
joinIterator.hasNext
joinIterator.hasNext
verify(memoryStore, times(1))
.releaseUnrollMemoryForThisTask(Matchers.eq(ON_HEAP), Matchers.eq(unrollSize.toLong))
// Secondly, iterate over rest iterator
(unrollSize until unrollSize + restSize).foreach { value =>
assert(joinIterator.hasNext)
assert(joinIterator.hasNext)
assert(joinIterator.next() == value)
}
joinIterator.close()
// MemoryMode.releaseUnrollMemoryForThisTask is called only once
verifyNoMoreInteractions(memoryStore)
}
}
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