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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.util.collection
import java.io.{ByteArrayInputStream, ByteArrayOutputStream, InputStream}
import com.google.common.io.ByteStreams
import org.scalatest.FunSuite
import org.scalatest.Matchers._
import org.apache.spark.SparkConf
import org.apache.spark.serializer.KryoSerializer
import org.apache.spark.storage.{FileSegment, BlockObjectWriter}
class PartitionedSerializedPairBufferSuite extends FunSuite {
test("OrderedInputStream single record") {
val serializerInstance = new KryoSerializer(new SparkConf()).newInstance
val buffer = new PartitionedSerializedPairBuffer[Int, SomeStruct](4, 32, serializerInstance)
val struct = SomeStruct("something", 5)
buffer.insert(4, 10, struct)
val bytes = ByteStreams.toByteArray(buffer.orderedInputStream)
val baos = new ByteArrayOutputStream()
val stream = serializerInstance.serializeStream(baos)
stream.writeObject(10)
stream.writeObject(struct)
stream.close()
baos.toByteArray should be (bytes)
}
test("insert single record") {
val serializerInstance = new KryoSerializer(new SparkConf()).newInstance
val buffer = new PartitionedSerializedPairBuffer[Int, SomeStruct](4, 32, serializerInstance)
val struct = SomeStruct("something", 5)
buffer.insert(4, 10, struct)
val elements = buffer.partitionedDestructiveSortedIterator(None).toArray
elements.size should be (1)
elements.head should be (((4, 10), struct))
}
test("insert multiple records") {
val serializerInstance = new KryoSerializer(new SparkConf()).newInstance
val buffer = new PartitionedSerializedPairBuffer[Int, SomeStruct](4, 32, serializerInstance)
val struct1 = SomeStruct("something1", 8)
buffer.insert(6, 1, struct1)
val struct2 = SomeStruct("something2", 9)
buffer.insert(4, 2, struct2)
val struct3 = SomeStruct("something3", 10)
buffer.insert(5, 3, struct3)
val elements = buffer.partitionedDestructiveSortedIterator(None).toArray
elements.size should be (3)
elements(0) should be (((4, 2), struct2))
elements(1) should be (((5, 3), struct3))
elements(2) should be (((6, 1), struct1))
}
test("write single record") {
val serializerInstance = new KryoSerializer(new SparkConf()).newInstance
val buffer = new PartitionedSerializedPairBuffer[Int, SomeStruct](4, 32, serializerInstance)
val struct = SomeStruct("something", 5)
buffer.insert(4, 10, struct)
val it = buffer.destructiveSortedWritablePartitionedIterator(None)
val writer = new SimpleBlockObjectWriter
assert(it.hasNext)
it.nextPartition should be (4)
it.writeNext(writer)
assert(!it.hasNext)
val stream = serializerInstance.deserializeStream(writer.getInputStream)
stream.readObject[AnyRef]() should be (10)
stream.readObject[AnyRef]() should be (struct)
}
test("write multiple records") {
val serializerInstance = new KryoSerializer(new SparkConf()).newInstance
val buffer = new PartitionedSerializedPairBuffer[Int, SomeStruct](4, 32, serializerInstance)
val struct1 = SomeStruct("something1", 8)
buffer.insert(6, 1, struct1)
val struct2 = SomeStruct("something2", 9)
buffer.insert(4, 2, struct2)
val struct3 = SomeStruct("something3", 10)
buffer.insert(5, 3, struct3)
val it = buffer.destructiveSortedWritablePartitionedIterator(None)
val writer = new SimpleBlockObjectWriter
assert(it.hasNext)
it.nextPartition should be (4)
it.writeNext(writer)
assert(it.hasNext)
it.nextPartition should be (5)
it.writeNext(writer)
assert(it.hasNext)
it.nextPartition should be (6)
it.writeNext(writer)
assert(!it.hasNext)
val stream = serializerInstance.deserializeStream(writer.getInputStream)
val iter = stream.asIterator
iter.next() should be (2)
iter.next() should be (struct2)
iter.next() should be (3)
iter.next() should be (struct3)
iter.next() should be (1)
iter.next() should be (struct1)
assert(!iter.hasNext)
}
}
case class SomeStruct(val str: String, val num: Int)
class SimpleBlockObjectWriter extends BlockObjectWriter(null) {
val baos = new ByteArrayOutputStream()
override def write(bytes: Array[Byte], offs: Int, len: Int): Unit = {
baos.write(bytes, offs, len)
}
def getInputStream(): InputStream = new ByteArrayInputStream(baos.toByteArray)
override def open(): BlockObjectWriter = this
override def close(): Unit = { }
override def isOpen: Boolean = true
override def commitAndClose(): Unit = { }
override def revertPartialWritesAndClose(): Unit = { }
override def fileSegment(): FileSegment = null
override def write(key: Any, value: Any): Unit = { }
override def recordWritten(): Unit = { }
override def write(b: Int): Unit = { }
}
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