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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.graphx
import java.io.{EOFException, ByteArrayInputStream, ByteArrayOutputStream}
import scala.util.Random
import org.scalatest.FunSuite
import org.apache.spark._
import org.apache.spark.graphx.impl._
import org.apache.spark.graphx.impl.MsgRDDFunctions._
import org.apache.spark.serializer.SerializationStream
class SerializerSuite extends FunSuite with LocalSparkContext {
test("IntVertexBroadcastMsgSerializer") {
val outMsg = new VertexBroadcastMsg[Int](3, 4, 5)
val bout = new ByteArrayOutputStream
val outStrm = new IntVertexBroadcastMsgSerializer().newInstance().serializeStream(bout)
outStrm.writeObject(outMsg)
outStrm.writeObject(outMsg)
bout.flush()
val bin = new ByteArrayInputStream(bout.toByteArray)
val inStrm = new IntVertexBroadcastMsgSerializer().newInstance().deserializeStream(bin)
val inMsg1: VertexBroadcastMsg[Int] = inStrm.readObject()
val inMsg2: VertexBroadcastMsg[Int] = inStrm.readObject()
assert(outMsg.vid === inMsg1.vid)
assert(outMsg.vid === inMsg2.vid)
assert(outMsg.data === inMsg1.data)
assert(outMsg.data === inMsg2.data)
intercept[EOFException] {
inStrm.readObject()
}
}
test("LongVertexBroadcastMsgSerializer") {
val outMsg = new VertexBroadcastMsg[Long](3, 4, 5)
val bout = new ByteArrayOutputStream
val outStrm = new LongVertexBroadcastMsgSerializer().newInstance().serializeStream(bout)
outStrm.writeObject(outMsg)
outStrm.writeObject(outMsg)
bout.flush()
val bin = new ByteArrayInputStream(bout.toByteArray)
val inStrm = new LongVertexBroadcastMsgSerializer().newInstance().deserializeStream(bin)
val inMsg1: VertexBroadcastMsg[Long] = inStrm.readObject()
val inMsg2: VertexBroadcastMsg[Long] = inStrm.readObject()
assert(outMsg.vid === inMsg1.vid)
assert(outMsg.vid === inMsg2.vid)
assert(outMsg.data === inMsg1.data)
assert(outMsg.data === inMsg2.data)
intercept[EOFException] {
inStrm.readObject()
}
}
test("DoubleVertexBroadcastMsgSerializer") {
val outMsg = new VertexBroadcastMsg[Double](3, 4, 5.0)
val bout = new ByteArrayOutputStream
val outStrm = new DoubleVertexBroadcastMsgSerializer().newInstance().serializeStream(bout)
outStrm.writeObject(outMsg)
outStrm.writeObject(outMsg)
bout.flush()
val bin = new ByteArrayInputStream(bout.toByteArray)
val inStrm = new DoubleVertexBroadcastMsgSerializer().newInstance().deserializeStream(bin)
val inMsg1: VertexBroadcastMsg[Double] = inStrm.readObject()
val inMsg2: VertexBroadcastMsg[Double] = inStrm.readObject()
assert(outMsg.vid === inMsg1.vid)
assert(outMsg.vid === inMsg2.vid)
assert(outMsg.data === inMsg1.data)
assert(outMsg.data === inMsg2.data)
intercept[EOFException] {
inStrm.readObject()
}
}
test("IntAggMsgSerializer") {
val outMsg = (4: VertexId, 5)
val bout = new ByteArrayOutputStream
val outStrm = new IntAggMsgSerializer().newInstance().serializeStream(bout)
outStrm.writeObject(outMsg)
outStrm.writeObject(outMsg)
bout.flush()
val bin = new ByteArrayInputStream(bout.toByteArray)
val inStrm = new IntAggMsgSerializer().newInstance().deserializeStream(bin)
val inMsg1: (VertexId, Int) = inStrm.readObject()
val inMsg2: (VertexId, Int) = inStrm.readObject()
assert(outMsg === inMsg1)
assert(outMsg === inMsg2)
intercept[EOFException] {
inStrm.readObject()
}
}
test("LongAggMsgSerializer") {
val outMsg = (4: VertexId, 1L << 32)
val bout = new ByteArrayOutputStream
val outStrm = new LongAggMsgSerializer().newInstance().serializeStream(bout)
outStrm.writeObject(outMsg)
outStrm.writeObject(outMsg)
bout.flush()
val bin = new ByteArrayInputStream(bout.toByteArray)
val inStrm = new LongAggMsgSerializer().newInstance().deserializeStream(bin)
val inMsg1: (VertexId, Long) = inStrm.readObject()
val inMsg2: (VertexId, Long) = inStrm.readObject()
assert(outMsg === inMsg1)
assert(outMsg === inMsg2)
intercept[EOFException] {
inStrm.readObject()
}
}
test("DoubleAggMsgSerializer") {
val outMsg = (4: VertexId, 5.0)
val bout = new ByteArrayOutputStream
val outStrm = new DoubleAggMsgSerializer().newInstance().serializeStream(bout)
outStrm.writeObject(outMsg)
outStrm.writeObject(outMsg)
bout.flush()
val bin = new ByteArrayInputStream(bout.toByteArray)
val inStrm = new DoubleAggMsgSerializer().newInstance().deserializeStream(bin)
val inMsg1: (VertexId, Double) = inStrm.readObject()
val inMsg2: (VertexId, Double) = inStrm.readObject()
assert(outMsg === inMsg1)
assert(outMsg === inMsg2)
intercept[EOFException] {
inStrm.readObject()
}
}
test("TestShuffleVertexBroadcastMsg") {
withSpark { sc =>
val bmsgs = sc.parallelize(0 until 100, 10).map { pid =>
new VertexBroadcastMsg[Int](pid, pid, pid)
}
bmsgs.partitionBy(new HashPartitioner(3)).collect()
}
}
test("variable long encoding") {
def testVarLongEncoding(v: Long, optimizePositive: Boolean) {
val bout = new ByteArrayOutputStream
val stream = new ShuffleSerializationStream(bout) {
def writeObject[T](t: T): SerializationStream = {
writeVarLong(t.asInstanceOf[Long], optimizePositive = optimizePositive)
this
}
}
stream.writeObject(v)
val bin = new ByteArrayInputStream(bout.toByteArray)
val dstream = new ShuffleDeserializationStream(bin) {
def readObject[T](): T = {
readVarLong(optimizePositive).asInstanceOf[T]
}
}
val read = dstream.readObject[Long]()
assert(read === v)
}
// Test all variable encoding code path (each branch uses 7 bits, i.e. 1L << 7 difference)
val d = Random.nextLong() % 128
Seq[Long](0, 1L << 0 + d, 1L << 7 + d, 1L << 14 + d, 1L << 21 + d, 1L << 28 + d, 1L << 35 + d,
1L << 42 + d, 1L << 49 + d, 1L << 56 + d, 1L << 63 + d).foreach { number =>
testVarLongEncoding(number, optimizePositive = false)
testVarLongEncoding(number, optimizePositive = true)
testVarLongEncoding(-number, optimizePositive = false)
testVarLongEncoding(-number, optimizePositive = true)
}
}
}
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