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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.repl
import java.io._
import java.net.URLClassLoader
import scala.collection.mutable.ArrayBuffer
import com.google.common.io.Files
import org.scalatest.FunSuite
import org.apache.spark.SparkContext
class ReplSuite extends FunSuite {
def runInterpreter(master: String, input: String): String = {
val in = new BufferedReader(new StringReader(input + "\n"))
val out = new StringWriter()
val cl = getClass.getClassLoader
var paths = new ArrayBuffer[String]
if (cl.isInstanceOf[URLClassLoader]) {
val urlLoader = cl.asInstanceOf[URLClassLoader]
for (url <- urlLoader.getURLs) {
if (url.getProtocol == "file") {
paths += url.getFile
}
}
}
val interp = new SparkILoop(in, new PrintWriter(out), master)
org.apache.spark.repl.Main.interp = interp
val separator = System.getProperty("path.separator")
interp.process(Array("-classpath", paths.mkString(separator)))
org.apache.spark.repl.Main.interp = null
if (interp.sparkContext != null) {
interp.sparkContext.stop()
}
// To avoid Akka rebinding to the same port, since it doesn't unbind immediately on shutdown
System.clearProperty("spark.driver.port")
return out.toString
}
def assertContains(message: String, output: String) {
assert(output.contains(message),
"Interpreter output did not contain '" + message + "':\n" + output)
}
def assertDoesNotContain(message: String, output: String) {
assert(!output.contains(message),
"Interpreter output contained '" + message + "':\n" + output)
}
test("propagation of local properties") {
// A mock ILoop that doesn't install the SIGINT handler.
class ILoop(out: PrintWriter) extends SparkILoop(None, out, None) {
settings = new scala.tools.nsc.Settings
settings.usejavacp.value = true
org.apache.spark.repl.Main.interp = this
override def createInterpreter() {
intp = new SparkILoopInterpreter
intp.setContextClassLoader()
}
}
val out = new StringWriter()
val interp = new ILoop(new PrintWriter(out))
interp.sparkContext = new SparkContext("local", "repl-test")
interp.createInterpreter()
interp.intp.initialize()
interp.sparkContext.setLocalProperty("someKey", "someValue")
// Make sure the value we set in the caller to interpret is propagated in the thread that
// interprets the command.
interp.interpret("org.apache.spark.repl.Main.interp.sparkContext.getLocalProperty(\"someKey\")")
assert(out.toString.contains("someValue"))
interp.sparkContext.stop()
System.clearProperty("spark.driver.port")
}
test("simple foreach with accumulator") {
val output = runInterpreter("local",
"""
|val accum = sc.accumulator(0)
|sc.parallelize(1 to 10).foreach(x => accum += x)
|accum.value
""".stripMargin)
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("res1: Int = 55", output)
}
test("external vars") {
val output = runInterpreter("local",
"""
|var v = 7
|sc.parallelize(1 to 10).map(x => v).collect.reduceLeft(_+_)
|v = 10
|sc.parallelize(1 to 10).map(x => v).collect.reduceLeft(_+_)
""".stripMargin)
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("res0: Int = 70", output)
assertContains("res1: Int = 100", output)
}
test("external classes") {
val output = runInterpreter("local",
"""
|class C {
|def foo = 5
|}
|sc.parallelize(1 to 10).map(x => (new C).foo).collect.reduceLeft(_+_)
""".stripMargin)
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("res0: Int = 50", output)
}
test("external functions") {
val output = runInterpreter("local",
"""
|def double(x: Int) = x + x
|sc.parallelize(1 to 10).map(x => double(x)).collect.reduceLeft(_+_)
""".stripMargin)
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("res0: Int = 110", output)
}
test("external functions that access vars") {
val output = runInterpreter("local",
"""
|var v = 7
|def getV() = v
|sc.parallelize(1 to 10).map(x => getV()).collect.reduceLeft(_+_)
|v = 10
|sc.parallelize(1 to 10).map(x => getV()).collect.reduceLeft(_+_)
""".stripMargin)
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("res0: Int = 70", output)
assertContains("res1: Int = 100", output)
}
test("broadcast vars") {
// Test that the value that a broadcast var had when it was created is used,
// even if that variable is then modified in the driver program
// TODO: This doesn't actually work for arrays when we run in local mode!
val output = runInterpreter("local",
"""
|var array = new Array[Int](5)
|val broadcastArray = sc.broadcast(array)
|sc.parallelize(0 to 4).map(x => broadcastArray.value(x)).collect
|array(0) = 5
|sc.parallelize(0 to 4).map(x => broadcastArray.value(x)).collect
""".stripMargin)
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("res0: Array[Int] = Array(0, 0, 0, 0, 0)", output)
assertContains("res2: Array[Int] = Array(5, 0, 0, 0, 0)", output)
}
test("interacting with files") {
val tempDir = Files.createTempDir()
val out = new FileWriter(tempDir + "/input")
out.write("Hello world!\n")
out.write("What's up?\n")
out.write("Goodbye\n")
out.close()
val output = runInterpreter("local",
"""
|var file = sc.textFile("%s/input").cache()
|file.count()
|file.count()
|file.count()
""".stripMargin.format(tempDir.getAbsolutePath))
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("res0: Long = 3", output)
assertContains("res1: Long = 3", output)
assertContains("res2: Long = 3", output)
}
test("local-cluster mode") {
val output = runInterpreter("local-cluster[1,1,512]",
"""
|var v = 7
|def getV() = v
|sc.parallelize(1 to 10).map(x => getV()).collect.reduceLeft(_+_)
|v = 10
|sc.parallelize(1 to 10).map(x => getV()).collect.reduceLeft(_+_)
|var array = new Array[Int](5)
|val broadcastArray = sc.broadcast(array)
|sc.parallelize(0 to 4).map(x => broadcastArray.value(x)).collect
|array(0) = 5
|sc.parallelize(0 to 4).map(x => broadcastArray.value(x)).collect
""".stripMargin)
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("res0: Int = 70", output)
assertContains("res1: Int = 100", output)
assertContains("res2: Array[Int] = Array(0, 0, 0, 0, 0)", output)
assertContains("res4: Array[Int] = Array(0, 0, 0, 0, 0)", output)
}
if (System.getenv("MESOS_NATIVE_LIBRARY") != null) {
test("running on Mesos") {
val output = runInterpreter("localquiet",
"""
|var v = 7
|def getV() = v
|sc.parallelize(1 to 10).map(x => getV()).collect.reduceLeft(_+_)
|v = 10
|sc.parallelize(1 to 10).map(x => getV()).collect.reduceLeft(_+_)
|var array = new Array[Int](5)
|val broadcastArray = sc.broadcast(array)
|sc.parallelize(0 to 4).map(x => broadcastArray.value(x)).collect
|array(0) = 5
|sc.parallelize(0 to 4).map(x => broadcastArray.value(x)).collect
""".stripMargin)
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("res0: Int = 70", output)
assertContains("res1: Int = 100", output)
assertContains("res2: Array[Int] = Array(0, 0, 0, 0, 0)", output)
assertContains("res4: Array[Int] = Array(0, 0, 0, 0, 0)", output)
}
}
test("collecting objects of class defined in repl") {
val output = runInterpreter("local[2]",
"""
|case class Foo(i: Int)
|val ret = sc.parallelize((1 to 100).map(Foo), 10).collect
""".stripMargin)
assertDoesNotContain("error:", output)
assertDoesNotContain("Exception", output)
assertContains("ret: Array[Foo] = Array(Foo(1),", output)
}
}
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