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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.deploy.worker
import java.io.File
import org.mockito.Matchers._
import org.mockito.Mockito._
import org.mockito.invocation.InvocationOnMock
import org.mockito.stubbing.Answer
import org.apache.spark.{SecurityManager, SparkConf, SparkFunSuite}
import org.apache.spark.deploy.{Command, DriverDescription}
import org.apache.spark.util.Clock
class DriverRunnerTest extends SparkFunSuite {
private def createDriverRunner() = {
val command = new Command("mainClass", Seq(), Map(), Seq(), Seq(), Seq())
val driverDescription = new DriverDescription("jarUrl", 512, 1, true, command)
val conf = new SparkConf()
new DriverRunner(conf, "driverId", new File("workDir"), new File("sparkHome"),
driverDescription, null, "akka://1.2.3.4/worker/", new SecurityManager(conf))
}
private def createProcessBuilderAndProcess(): (ProcessBuilderLike, Process) = {
val processBuilder = mock(classOf[ProcessBuilderLike])
when(processBuilder.command).thenReturn(Seq("mocked", "command"))
val process = mock(classOf[Process])
when(processBuilder.start()).thenReturn(process)
(processBuilder, process)
}
test("Process succeeds instantly") {
val runner = createDriverRunner()
val sleeper = mock(classOf[Sleeper])
runner.setSleeper(sleeper)
val (processBuilder, process) = createProcessBuilderAndProcess()
// One failure then a successful run
when(process.waitFor()).thenReturn(0)
runner.runCommandWithRetry(processBuilder, p => (), supervise = true)
verify(process, times(1)).waitFor()
verify(sleeper, times(0)).sleep(anyInt())
}
test("Process failing several times and then succeeding") {
val runner = createDriverRunner()
val sleeper = mock(classOf[Sleeper])
runner.setSleeper(sleeper)
val (processBuilder, process) = createProcessBuilderAndProcess()
// fail, fail, fail, success
when(process.waitFor()).thenReturn(-1).thenReturn(-1).thenReturn(-1).thenReturn(0)
runner.runCommandWithRetry(processBuilder, p => (), supervise = true)
verify(process, times(4)).waitFor()
verify(sleeper, times(3)).sleep(anyInt())
verify(sleeper, times(1)).sleep(1)
verify(sleeper, times(1)).sleep(2)
verify(sleeper, times(1)).sleep(4)
}
test("Process doesn't restart if not supervised") {
val runner = createDriverRunner()
val sleeper = mock(classOf[Sleeper])
runner.setSleeper(sleeper)
val (processBuilder, process) = createProcessBuilderAndProcess()
when(process.waitFor()).thenReturn(-1)
runner.runCommandWithRetry(processBuilder, p => (), supervise = false)
verify(process, times(1)).waitFor()
verify(sleeper, times(0)).sleep(anyInt())
}
test("Process doesn't restart if killed") {
val runner = createDriverRunner()
val sleeper = mock(classOf[Sleeper])
runner.setSleeper(sleeper)
val (processBuilder, process) = createProcessBuilderAndProcess()
when(process.waitFor()).thenAnswer(new Answer[Int] {
def answer(invocation: InvocationOnMock): Int = {
runner.kill()
-1
}
})
runner.runCommandWithRetry(processBuilder, p => (), supervise = true)
verify(process, times(1)).waitFor()
verify(sleeper, times(0)).sleep(anyInt())
}
test("Reset of backoff counter") {
val runner = createDriverRunner()
val sleeper = mock(classOf[Sleeper])
runner.setSleeper(sleeper)
val clock = mock(classOf[Clock])
runner.setClock(clock)
val (processBuilder, process) = createProcessBuilderAndProcess()
when(process.waitFor())
.thenReturn(-1) // fail 1
.thenReturn(-1) // fail 2
.thenReturn(-1) // fail 3
.thenReturn(-1) // fail 4
.thenReturn(0) // success
when(clock.getTimeMillis())
.thenReturn(0).thenReturn(1000) // fail 1 (short)
.thenReturn(1000).thenReturn(2000) // fail 2 (short)
.thenReturn(2000).thenReturn(10000) // fail 3 (long)
.thenReturn(10000).thenReturn(11000) // fail 4 (short)
.thenReturn(11000).thenReturn(21000) // success (long)
runner.runCommandWithRetry(processBuilder, p => (), supervise = true)
verify(sleeper, times(4)).sleep(anyInt())
// Expected sequence of sleeps is 1,2,1,2
verify(sleeper, times(2)).sleep(1)
verify(sleeper, times(2)).sleep(2)
}
}
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