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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 org.scalatest.PrivateMethodTester
import org.apache.spark.scheduler.{SchedulerBackend, TaskScheduler, TaskSchedulerImpl}
import org.apache.spark.scheduler.cluster.{SimrSchedulerBackend, SparkDeploySchedulerBackend}
import org.apache.spark.scheduler.cluster.mesos.{CoarseMesosSchedulerBackend, MesosSchedulerBackend}
import org.apache.spark.scheduler.local.LocalBackend
import org.apache.spark.util.Utils
class SparkContextSchedulerCreationSuite
extends SparkFunSuite with LocalSparkContext with PrivateMethodTester with Logging {
def createTaskScheduler(master: String): TaskSchedulerImpl =
createTaskScheduler(master, new SparkConf())
def createTaskScheduler(master: String, conf: SparkConf): TaskSchedulerImpl = {
// Create local SparkContext to setup a SparkEnv. We don't actually want to start() the
// real schedulers, so we don't want to create a full SparkContext with the desired scheduler.
sc = new SparkContext("local", "test", conf)
val createTaskSchedulerMethod =
PrivateMethod[Tuple2[SchedulerBackend, TaskScheduler]]('createTaskScheduler)
val (_, sched) = SparkContext invokePrivate createTaskSchedulerMethod(sc, master)
sched.asInstanceOf[TaskSchedulerImpl]
}
test("bad-master") {
val e = intercept[SparkException] {
createTaskScheduler("localhost:1234")
}
assert(e.getMessage.contains("Could not parse Master URL"))
}
test("local") {
val sched = createTaskScheduler("local")
sched.backend match {
case s: LocalBackend => assert(s.totalCores === 1)
case _ => fail()
}
}
test("local-*") {
val sched = createTaskScheduler("local[*]")
sched.backend match {
case s: LocalBackend => assert(s.totalCores === Runtime.getRuntime.availableProcessors())
case _ => fail()
}
}
test("local-n") {
val sched = createTaskScheduler("local[5]")
assert(sched.maxTaskFailures === 1)
sched.backend match {
case s: LocalBackend => assert(s.totalCores === 5)
case _ => fail()
}
}
test("local-*-n-failures") {
val sched = createTaskScheduler("local[* ,2]")
assert(sched.maxTaskFailures === 2)
sched.backend match {
case s: LocalBackend => assert(s.totalCores === Runtime.getRuntime.availableProcessors())
case _ => fail()
}
}
test("local-n-failures") {
val sched = createTaskScheduler("local[4, 2]")
assert(sched.maxTaskFailures === 2)
sched.backend match {
case s: LocalBackend => assert(s.totalCores === 4)
case _ => fail()
}
}
test("bad-local-n") {
val e = intercept[SparkException] {
createTaskScheduler("local[2*]")
}
assert(e.getMessage.contains("Could not parse Master URL"))
}
test("bad-local-n-failures") {
val e = intercept[SparkException] {
createTaskScheduler("local[2*,4]")
}
assert(e.getMessage.contains("Could not parse Master URL"))
}
test("local-default-parallelism") {
val conf = new SparkConf().set("spark.default.parallelism", "16")
val sched = createTaskScheduler("local", conf)
sched.backend match {
case s: LocalBackend => assert(s.defaultParallelism() === 16)
case _ => fail()
}
}
test("simr") {
createTaskScheduler("simr://uri").backend match {
case s: SimrSchedulerBackend => // OK
case _ => fail()
}
}
test("local-cluster") {
createTaskScheduler("local-cluster[3, 14, 1024]").backend match {
case s: SparkDeploySchedulerBackend => // OK
case _ => fail()
}
}
def testYarn(master: String, expectedClassName: String) {
try {
val sched = createTaskScheduler(master)
assert(sched.getClass === Utils.classForName(expectedClassName))
} catch {
case e: SparkException =>
assert(e.getMessage.contains("YARN mode not available"))
logWarning("YARN not available, could not test actual YARN scheduler creation")
case e: Throwable => fail(e)
}
}
test("yarn-cluster") {
testYarn("yarn-cluster", "org.apache.spark.scheduler.cluster.YarnClusterScheduler")
}
test("yarn-standalone") {
testYarn("yarn-standalone", "org.apache.spark.scheduler.cluster.YarnClusterScheduler")
}
test("yarn-client") {
testYarn("yarn-client", "org.apache.spark.scheduler.cluster.YarnScheduler")
}
def testMesos(master: String, expectedClass: Class[_], coarse: Boolean) {
val conf = new SparkConf().set("spark.mesos.coarse", coarse.toString)
try {
val sched = createTaskScheduler(master, conf)
assert(sched.backend.getClass === expectedClass)
} catch {
case e: UnsatisfiedLinkError =>
assert(e.getMessage.contains("mesos"))
logWarning("Mesos not available, could not test actual Mesos scheduler creation")
case e: Throwable => fail(e)
}
}
test("mesos fine-grained") {
testMesos("mesos://localhost:1234", classOf[MesosSchedulerBackend], coarse = false)
}
test("mesos coarse-grained") {
testMesos("mesos://localhost:1234", classOf[CoarseMesosSchedulerBackend], coarse = true)
}
test("mesos with zookeeper") {
testMesos("mesos://zk://localhost:1234,localhost:2345",
classOf[MesosSchedulerBackend], coarse = false)
}
test("mesos with zookeeper and Master URL starting with zk://") {
testMesos("zk://localhost:1234,localhost:2345", classOf[MesosSchedulerBackend], coarse = false)
}
}
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