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[SPARK-2778] [yarn] Add yarn integration tests.
This patch adds a couple of, currently, very simple integration tests to make sure both client and cluster modes are working. The tests don't do much yet other than run a simple job, but the plan is to enhance them after we get the framework in. The cluster tests are noisy, so redirect all log output to a file like other tests do. Copying the conf around sucks but it's less work than messing with maven/sbt and having to clean up other projects. Note the test is only added for yarn-stable. The code compiles against yarn-alpha but there are two issues I ran into that I could not overcome: - and old netty dependency kept creeping into the classpath and causing akka to not work, when using sbt; the old netty was correctly suppressed under maven. - MiniYARNCluster kept failing to execute containers because it did not create the NM's local dir itself; this is apparently a known behavior, but I'm not sure how to work around it. None of those issues are present with the stable Yarn. Also, these tests are a little slow to run. Apparently Spark doesn't yet tag tests (so that these could be isolated in a "slow" batch), so this is something to keep in mind.
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Marcelo Vanzin
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Sep 3, 2014
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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. | ||
| # | ||
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| # Set everything to be logged to the file core/target/unit-tests.log | ||
| log4j.rootCategory=INFO, file | ||
| log4j.appender.file=org.apache.log4j.FileAppender | ||
| log4j.appender.file.append=false | ||
| log4j.appender.file.file=target/unit-tests.log | ||
| log4j.appender.file.layout=org.apache.log4j.PatternLayout | ||
| log4j.appender.file.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss.SSS} %p %c{1}: %m%n | ||
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| # Ignore messages below warning level from Jetty, because it's a bit verbose | ||
| log4j.logger.org.eclipse.jetty=WARN | ||
| org.eclipse.jetty.LEVEL=WARN |
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yarn/stable/src/test/scala/org/apache/spark/deploy/yarn/YarnClusterSuite.scala
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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. | ||
| */ | ||
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| package org.apache.spark.deploy.yarn | ||
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| import java.io.File | ||
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| import scala.collection.JavaConversions._ | ||
| import scala.collection.mutable.HashMap | ||
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| import com.google.common.base.Charsets | ||
| import com.google.common.io.Files | ||
| import org.scalatest.{BeforeAndAfterAll, FunSuite, Matchers} | ||
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| import org.apache.hadoop.yarn.conf.YarnConfiguration | ||
| import org.apache.hadoop.yarn.server.MiniYARNCluster | ||
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| import org.apache.spark.{Logging, SparkConf, SparkContext} | ||
| import org.apache.spark.deploy.SparkHadoopUtil | ||
| import org.apache.spark.util.Utils | ||
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| class YarnClusterSuite extends FunSuite with BeforeAndAfterAll with Matchers { | ||
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| private val oldConf = new HashMap[String, String]() | ||
| private var yarnCluster: MiniYARNCluster = _ | ||
| private var tempDir: File = _ | ||
| private var fakeSparkJar: File = _ | ||
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| override def beforeAll() { | ||
| tempDir = Utils.createTempDir() | ||
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| yarnCluster = new MiniYARNCluster(getClass().getName(), 1, 1, 1, 1, false) | ||
| yarnCluster.init(new YarnConfiguration()) | ||
| yarnCluster.start() | ||
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| val sysProps = sys.props.map { case (k, v) => (k, v) } | ||
| sysProps.foreach { case (k, v) => | ||
| if (k.startsWith("spark.")) { | ||
| oldConf += (k -> v) | ||
| sys.props -= k | ||
| } | ||
| } | ||
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| yarnCluster.getConfig().foreach { e => | ||
| sys.props += ("spark.hadoop." + e.getKey() -> e.getValue()) | ||
| } | ||
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| fakeSparkJar = File.createTempFile("sparkJar", null, tempDir) | ||
| sys.props += ("spark.yarn.jar" -> ("local:" + fakeSparkJar.getAbsolutePath())) | ||
| sys.props += ("spark.executor.instances" -> "1") | ||
| sys.props += ("spark.driver.extraClassPath" -> sys.props("java.class.path")) | ||
| sys.props += ("spark.executor.extraClassPath" -> sys.props("java.class.path")) | ||
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| super.beforeAll() | ||
| } | ||
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| override def afterAll() { | ||
| yarnCluster.stop() | ||
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| val sysProps = sys.props.map { case (k, v) => (k, v) } | ||
| sysProps.foreach { case (k, v) => | ||
| if (k.startsWith("spark.")) { | ||
| sys.props -= k | ||
| } | ||
| } | ||
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| oldConf.foreach { case (k, v) => sys.props += (k -> v) } | ||
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| super.afterAll() | ||
| } | ||
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| test("run Spark in yarn-client mode") { | ||
| var result = File.createTempFile("result", null, tempDir) | ||
| YarnClusterDriver.main(Array("yarn-client", result.getAbsolutePath())) | ||
| checkResult(result) | ||
| } | ||
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| test("run Spark in yarn-cluster mode") { | ||
| val main = YarnClusterDriver.getClass.getName().stripSuffix("$") | ||
| var result = File.createTempFile("result", null, tempDir) | ||
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| // The Client object will call System.exit() after the job is done, and we don't want | ||
| // that because it messes up the scalatest monitoring. So replicate some of what main() | ||
| // does here. | ||
| val args = Array("--class", main, | ||
| "--jar", "file:" + fakeSparkJar.getAbsolutePath(), | ||
| "--arg", "yarn-cluster", | ||
| "--arg", result.getAbsolutePath(), | ||
| "--num-executors", "4") | ||
| val sparkConf = new SparkConf() | ||
| val yarnConf = SparkHadoopUtil.get.newConfiguration(sparkConf) | ||
| val clientArgs = new ClientArguments(args, sparkConf) | ||
| new Client(clientArgs, yarnConf, sparkConf).run() | ||
| checkResult(result) | ||
| } | ||
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| /** | ||
| * This is a workaround for an issue with yarn-cluster mode: the Client class will not provide | ||
| * any sort of error when the job process finishes successfully, but the job itself fails. So | ||
| * the tests enforce that something is written to a file after everything is ok to indicate | ||
| * that the job succeeded. | ||
| */ | ||
| private def checkResult(result: File) = { | ||
| var resultString = Files.toString(result, Charsets.UTF_8) | ||
| resultString should be ("success") | ||
| } | ||
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| } | ||
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| private object YarnClusterDriver extends Logging with Matchers { | ||
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| def main(args: Array[String]) = { | ||
| val sc = new SparkContext(new SparkConf().setMaster(args(0)) | ||
| .setAppName("yarn \"test app\" 'with quotes'")) | ||
| val status = new File(args(1)) | ||
| var result = "failure" | ||
| try { | ||
| val data = sc.parallelize(1 to 4).map(i => i).collect().toSet | ||
| data should be (Set(1, 2, 3, 4)) | ||
| result = "success" | ||
| } finally { | ||
| sc.stop() | ||
| Files.write(result, status, Charsets.UTF_8) | ||
| } | ||
| } | ||
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| } |