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From jia...@apache.org
Subject [39/74] [abbrv] hadoop git commit: YARN-7050. Post cleanup after YARN-6903, removal of org.apache.slider package. Contributed by Jian He
Date Tue, 29 Aug 2017 22:20:48 GMT
http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/AbstractLauncher.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/AbstractLauncher.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/AbstractLauncher.java
new file mode 100644
index 0000000..e4eae20
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/AbstractLauncher.java
@@ -0,0 +1,271 @@
+/*
+ * 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.hadoop.yarn.service.containerlaunch;
+
+import com.google.common.base.Preconditions;
+import org.apache.hadoop.security.Credentials;
+import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
+import org.apache.hadoop.yarn.api.records.ContainerRetryContext;
+import org.apache.hadoop.yarn.api.records.ContainerRetryPolicy;
+import org.apache.hadoop.yarn.api.records.LocalResource;
+import org.apache.hadoop.yarn.util.Records;
+import org.apache.hadoop.yarn.service.conf.YarnServiceConstants;
+import org.apache.hadoop.yarn.service.utils.CoreFileSystem;
+import org.apache.hadoop.yarn.service.utils.SliderUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import static org.apache.hadoop.yarn.service.provider.docker.DockerKeys.DEFAULT_DOCKER_NETWORK;
+
+/**
+ * Launcher of applications: base class
+ */
+public class AbstractLauncher {
+  private static final Logger log =
+    LoggerFactory.getLogger(AbstractLauncher.class);
+  public static final String CLASSPATH = "CLASSPATH";
+  /**
+   * Filesystem to use for the launch
+   */
+  protected final CoreFileSystem coreFileSystem;
+  /**
+   * Env vars; set up at final launch stage
+   */
+  protected final Map<String, String> envVars = new HashMap<>();
+  protected final ContainerLaunchContext containerLaunchContext =
+    Records.newRecord(ContainerLaunchContext.class);
+  protected final List<String> commands = new ArrayList<>(20);
+  protected final Map<String, LocalResource> localResources = new HashMap<>();
+  protected final Map<String, String> mountPaths = new HashMap<>();
+  private final Map<String, ByteBuffer> serviceData = new HashMap<>();
+  // security
+  protected final Credentials credentials;
+  protected boolean yarnDockerMode = false;
+  protected String dockerImage;
+  protected String dockerNetwork = DEFAULT_DOCKER_NETWORK;
+  protected String dockerHostname;
+  protected String runPrivilegedContainer;
+
+
+  /**
+   * Create instance.
+   * @param coreFileSystem filesystem
+   * @param credentials initial set of credentials -null is permitted
+   */
+  public AbstractLauncher(
+      CoreFileSystem coreFileSystem,
+      Credentials credentials) {
+    this.coreFileSystem = coreFileSystem;
+    this.credentials = credentials != null ? credentials: new Credentials();
+  }
+  
+  public void setYarnDockerMode(boolean yarnDockerMode){
+    this.yarnDockerMode = yarnDockerMode;
+  }
+
+  /**
+   * Get the env vars to work on
+   * @return env vars
+   */
+  public Map<String, String> getEnv() {
+    return envVars;
+  }
+
+  /**
+   * Get the launch commands.
+   * @return the live list of commands 
+   */
+  public List<String> getCommands() {
+    return commands;
+  }
+
+  public void addLocalResource(String subPath, LocalResource resource) {
+    localResources.put(subPath, resource);
+  }
+
+  public void addLocalResource(String subPath, LocalResource resource, String mountPath) {
+    localResources.put(subPath, resource);
+    mountPaths.put(subPath, mountPath);
+  }
+
+  /**
+   * Accessor to the credentials
+   * @return the credentials associated with this launcher
+   */
+  public Credentials getCredentials() {
+    return credentials;
+  }
+
+
+  public void addCommand(String cmd) {
+    commands.add(cmd);
+  }
+
+  /**
+   * Complete the launch context (copy in env vars, etc).
+   * @return the container to launch
+   */
+  public ContainerLaunchContext completeContainerLaunch() throws IOException {
+    
+    String cmdStr = SliderUtils.join(commands, " ", false);
+    log.debug("Completed setting up container command {}", cmdStr);
+    containerLaunchContext.setCommands(commands);
+
+    //env variables
+    if (log.isDebugEnabled()) {
+      log.debug("Environment variables");
+      for (Map.Entry<String, String> envPair : envVars.entrySet()) {
+        log.debug("    \"{}\"=\"{}\"", envPair.getKey(), envPair.getValue());
+      }
+    }    
+    containerLaunchContext.setEnvironment(envVars);
+
+    //service data
+    if (log.isDebugEnabled()) {
+      log.debug("Service Data size");
+      for (Map.Entry<String, ByteBuffer> entry : serviceData.entrySet()) {
+        log.debug("\"{}\"=> {} bytes of data", entry.getKey(),
+            entry.getValue().array().length);
+      }
+    }
+    containerLaunchContext.setServiceData(serviceData);
+
+    // resources
+    dumpLocalResources();
+    containerLaunchContext.setLocalResources(localResources);
+
+    //tokens
+    log.debug("{} tokens", credentials.numberOfTokens());
+    containerLaunchContext.setTokens(CredentialUtils.marshallCredentials(
+        credentials));
+
+    if(yarnDockerMode){
+      Map<String, String> env = containerLaunchContext.getEnvironment();
+      env.put("YARN_CONTAINER_RUNTIME_TYPE", "docker");
+      env.put("YARN_CONTAINER_RUNTIME_DOCKER_IMAGE", dockerImage);
+      env.put("YARN_CONTAINER_RUNTIME_DOCKER_CONTAINER_NETWORK", dockerNetwork);
+      env.put("YARN_CONTAINER_RUNTIME_DOCKER_CONTAINER_HOSTNAME",
+          dockerHostname);
+      env.put("YARN_CONTAINER_RUNTIME_DOCKER_RUN_PRIVILEGED_CONTAINER", runPrivilegedContainer);
+      StringBuilder sb = new StringBuilder();
+      for (Entry<String,String> mount : mountPaths.entrySet()) {
+        if (sb.length() > 0) {
+          sb.append(",");
+        }
+        sb.append(mount.getKey());
+        sb.append(":");
+        sb.append(mount.getValue());
+      }
+      env.put("YARN_CONTAINER_RUNTIME_DOCKER_LOCAL_RESOURCE_MOUNTS", sb.toString());
+      log.info("yarn docker env var has been set {}", containerLaunchContext.getEnvironment().toString());
+    }
+
+    return containerLaunchContext;
+  }
+
+  public void setRetryContext(int maxRetries, int retryInterval) {
+    ContainerRetryContext retryContext = ContainerRetryContext
+        .newInstance(ContainerRetryPolicy.RETRY_ON_ALL_ERRORS, null, maxRetries,
+            retryInterval);
+    containerLaunchContext.setContainerRetryContext(retryContext);
+  }
+
+  /**
+   * Dump local resources at debug level
+   */
+  private void dumpLocalResources() {
+    if (log.isDebugEnabled()) {
+      log.debug("{} resources: ", localResources.size());
+      for (Map.Entry<String, LocalResource> entry : localResources.entrySet()) {
+
+        String key = entry.getKey();
+        LocalResource val = entry.getValue();
+        log.debug(key + "=" + SliderUtils.stringify(val.getResource()));
+      }
+    }
+  }
+
+  /**
+   * This is critical for an insecure cluster -it passes
+   * down the username to YARN, and so gives the code running
+   * in containers the rights it needs to work with
+   * data.
+   * @throws IOException problems working with current user
+   */
+  protected void propagateUsernameInInsecureCluster() throws IOException {
+    //insecure cluster: propagate user name via env variable
+    String userName = UserGroupInformation.getCurrentUser().getUserName();
+    envVars.put(YarnServiceConstants.HADOOP_USER_NAME, userName);
+  }
+
+  /**
+   * Utility method to set up the classpath
+   * @param classpath classpath to use
+   */
+  public void setClasspath(ClasspathConstructor classpath) {
+    setEnv(CLASSPATH, classpath.buildClasspath());
+  }
+
+  /**
+   * Set an environment variable in the launch context
+   * @param var variable name
+   * @param value value (must be non null)
+   */
+  public void setEnv(String var, String value) {
+    Preconditions.checkArgument(var != null, "null variable name");
+    Preconditions.checkArgument(value != null, "null value");
+    envVars.put(var, value);
+  }
+
+
+  public void putEnv(Map<String, String> map) {
+    envVars.putAll(map);
+  }
+
+
+  public void setDockerImage(String dockerImage) {
+    this.dockerImage = dockerImage;
+  }
+
+  public void setDockerNetwork(String dockerNetwork) {
+    this.dockerNetwork = dockerNetwork;
+  }
+
+  public void setDockerHostname(String dockerHostname) {
+    this.dockerHostname = dockerHostname;
+  }
+
+  public void setRunPrivilegedContainer(boolean runPrivilegedContainer) {
+    if (runPrivilegedContainer) {
+      this.runPrivilegedContainer = Boolean.toString(true);
+    } else {
+      this.runPrivilegedContainer = Boolean.toString(false);
+    }
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/ClasspathConstructor.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/ClasspathConstructor.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/ClasspathConstructor.java
new file mode 100644
index 0000000..22b3877
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/ClasspathConstructor.java
@@ -0,0 +1,172 @@
+/*
+ * 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.hadoop.yarn.service.containerlaunch;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.util.StringUtils;
+import org.apache.hadoop.yarn.api.ApplicationConstants;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.apache.hadoop.yarn.service.utils.SliderUtils;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * build a classpath -allows for entries to be injected in front of
+ * YARN classpath as well as behind, adds appropriate separators, 
+ * extraction of local classpath, etc.
+ */
+public class ClasspathConstructor {
+
+    public static final String CLASS_PATH_SEPARATOR = ApplicationConstants.CLASS_PATH_SEPARATOR;
+  private final List<String> pathElements = new ArrayList<>();
+
+  public ClasspathConstructor() {
+  }
+
+
+  /**
+   * Get the list of JARs from the YARN settings
+   * @param config configuration
+   */
+  public List<String> yarnApplicationClasspath(Configuration config) {
+    String[] cp = config.getTrimmedStrings(
+      YarnConfiguration.YARN_APPLICATION_CLASSPATH,
+      YarnConfiguration.DEFAULT_YARN_CROSS_PLATFORM_APPLICATION_CLASSPATH);
+    return cp != null ? Arrays.asList(cp) : new ArrayList<String>(0);
+
+  }
+
+
+  @Override
+  public String toString() {
+    return buildClasspath();
+  }
+
+  public String buildClasspath() {
+    return SliderUtils.join(pathElements,
+        CLASS_PATH_SEPARATOR,
+        false);
+  }
+
+  /**
+   * Get a copy of the path list
+   * @return the JARs
+   */
+  public List<String> getPathElements() {
+    return Collections.unmodifiableList(pathElements);
+  }
+
+  /**
+   * Append an entry
+   * @param path path
+   */
+  public void append(String path) {
+    pathElements.add(path);
+  }
+
+  /**
+   * Insert a path at the front of the list. This places it ahead of
+   * the standard YARN artifacts
+   * @param path path to the JAR. Absolute or relative -on the target
+   * system
+   */
+  public void insert(String path) {
+    pathElements.add(0, path);
+  }
+
+  public void appendAll(Collection<String> paths) {
+    pathElements.addAll(paths);
+  }
+
+  public void insertAll(Collection<String> paths) {
+    pathElements.addAll(0, paths);
+  }
+
+
+  public void addLibDir(String pathToLibDir) {
+    append(buildLibDir(pathToLibDir));
+  }
+
+  public void insertLibDir(String pathToLibDir) {
+    insert(buildLibDir(pathToLibDir));
+  }
+
+  public void addClassDirectory(String pathToDir) {
+    append(appendDirectoryTerminator(pathToDir));
+  }
+
+  public void insertClassDirectory(String pathToDir) {
+    insert(buildLibDir(appendDirectoryTerminator(pathToDir)));
+  }
+
+
+  public void addRemoteClasspathEnvVar() {
+    append(ApplicationConstants.Environment.CLASSPATH.$$());
+  }
+
+
+  public void insertRemoteClasspathEnvVar() {
+    append(ApplicationConstants.Environment.CLASSPATH.$$());
+  }
+
+
+  /**
+   * Build a lib dir path
+   * @param pathToLibDir path to the directory; may or may not end with a
+   * trailing space
+   * @return a path to a lib dir that is compatible with the java classpath
+   */
+  public String buildLibDir(String pathToLibDir) {
+    String dir = appendDirectoryTerminator(pathToLibDir);
+    dir += "*";
+    return dir;
+  }
+
+  private String appendDirectoryTerminator(String pathToLibDir) {
+    String dir = pathToLibDir.trim();
+    if (!dir.endsWith("/")) {
+      dir += "/";
+    }
+    return dir;
+  }
+
+  /**
+   * Split a classpath. This uses the local path separator so MUST NOT
+   * be used to work with remote classpaths
+   * @param localpath local path
+   * @return a splite
+   */
+  public Collection<String> splitClasspath(String localpath) {
+    String separator = System.getProperty("path.separator");
+    return StringUtils.getStringCollection(localpath, separator);
+  }
+
+  /**
+   * Get the local JVM classpath split up
+   * @return the list of entries on the JVM classpath env var
+   */
+  public Collection<String> localJVMClasspath() {
+    return splitClasspath(System.getProperty("java.class.path"));
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/CommandLineBuilder.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/CommandLineBuilder.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/CommandLineBuilder.java
new file mode 100644
index 0000000..7baa284
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/CommandLineBuilder.java
@@ -0,0 +1,86 @@
+/*
+ * 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.hadoop.yarn.service.containerlaunch;
+
+import com.google.common.base.Preconditions;
+import org.apache.hadoop.yarn.api.ApplicationConstants;
+import org.apache.hadoop.yarn.service.utils.SliderUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Build a single command line to include in the container commands;
+ * Special support for JVM command buildup.
+ */
+public class CommandLineBuilder {
+  protected final List<String> argumentList = new ArrayList<>(20);
+
+  /**
+   * Add an entry to the command list
+   * @param args arguments -these will be converted strings
+   */
+  public void add(Object... args) {
+    for (Object arg : args) {
+      argumentList.add(arg.toString());
+    }
+  }
+
+  // Get the number of arguments
+  public int size() {
+    return argumentList.size();
+  }
+  
+  /**
+   * Append the output and error files to the tail of the command
+   * @param stdout out
+   * @param stderr error. Set this to null to append into stdout
+   */
+  public void addOutAndErrFiles(String stdout, String stderr) {
+    Preconditions.checkNotNull(stdout, "Null output file");
+    Preconditions.checkState(!stdout.isEmpty(), "output filename invalid");
+    // write out the path output
+    argumentList.add("1>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/" +
+             stdout);
+    if (stderr != null) {
+      argumentList.add("2>" + ApplicationConstants.LOG_DIR_EXPANSION_VAR + "/" +
+               stderr);
+    } else {
+      argumentList.add("2>&1");
+    }
+  }
+
+  /**
+   * This just returns the command line
+   * @see #build()
+   * @return the command line
+   */
+  @Override
+  public String toString() {
+    return build();
+  }
+
+  /**
+   * Build the command line
+   * @return the command line
+   */
+  public String build() {
+    return SliderUtils.join(argumentList, " ");
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/ContainerLaunchService.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/ContainerLaunchService.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/ContainerLaunchService.java
new file mode 100644
index 0000000..fcbb69b
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/ContainerLaunchService.java
@@ -0,0 +1,101 @@
+/**
+ * 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.hadoop.yarn.service.containerlaunch;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.service.AbstractService;
+import org.apache.hadoop.yarn.api.records.Container;
+import org.apache.hadoop.yarn.service.api.records.Component;
+import org.apache.hadoop.yarn.service.compinstance.ComponentInstance;
+import org.apache.hadoop.yarn.service.provider.ProviderService;
+import org.apache.hadoop.yarn.service.provider.ProviderFactory;
+import org.apache.hadoop.yarn.service.api.records.Application;
+import org.apache.hadoop.yarn.service.utils.SliderFileSystem;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+public class ContainerLaunchService extends AbstractService{
+
+  protected static final Logger LOG =
+      LoggerFactory.getLogger(ContainerLaunchService.class);
+
+  private ExecutorService executorService;
+  private SliderFileSystem fs;
+
+  public ContainerLaunchService(SliderFileSystem fs) {
+    super(ContainerLaunchService.class.getName());
+    this.fs = fs;
+  }
+
+  @Override
+  public void serviceInit(Configuration conf) throws Exception {
+    executorService = Executors.newCachedThreadPool();
+    super.serviceInit(conf);
+  }
+
+  @Override
+  protected void serviceStop() throws Exception {
+    if (executorService != null) {
+      executorService.shutdownNow();
+    }
+    super.serviceStop();
+  }
+
+  public void launchCompInstance(Application application,
+      ComponentInstance instance, Container container) {
+    ContainerLauncher launcher =
+        new ContainerLauncher(application, instance, container);
+    executorService.execute(launcher);
+  }
+
+  private class ContainerLauncher implements Runnable {
+    public final Container container;
+    public final Application application;
+    public ComponentInstance instance;
+
+    public ContainerLauncher(
+        Application application,
+        ComponentInstance instance, Container container) {
+      this.container = container;
+      this.application = application;
+      this.instance = instance;
+    }
+
+    @Override public void run() {
+      Component compSpec = instance.getCompSpec();
+      ProviderService provider = ProviderFactory.getProviderService(
+          compSpec.getArtifact());
+      AbstractLauncher launcher = new AbstractLauncher(fs, null);
+      try {
+        provider.buildContainerLaunchContext(launcher, application,
+            instance, fs, getConfig());
+        instance.getComponent().getScheduler().getNmClient()
+            .startContainerAsync(container,
+                launcher.completeContainerLaunch());
+      } catch (Exception e) {
+        LOG.error(instance.getCompInstanceId()
+            + ": Failed to launch container. ", e);
+
+      }
+    }
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/CredentialUtils.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/CredentialUtils.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/CredentialUtils.java
new file mode 100644
index 0000000..fce58e5
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/CredentialUtils.java
@@ -0,0 +1,319 @@
+/*
+ * 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.hadoop.yarn.service.containerlaunch;
+
+import com.google.common.base.Preconditions;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.io.DataOutputBuffer;
+import org.apache.hadoop.io.Text;
+import org.apache.hadoop.security.Credentials;
+import org.apache.hadoop.security.SecurityUtil;
+import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.hadoop.security.token.Token;
+import org.apache.hadoop.security.token.TokenIdentifier;
+import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenIdentifier;
+import org.apache.hadoop.yarn.client.ClientRMProxy;
+import org.apache.hadoop.yarn.client.api.TimelineClient;
+import org.apache.hadoop.yarn.client.api.YarnClient;
+import org.apache.hadoop.yarn.conf.HAUtil;
+import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.apache.hadoop.yarn.exceptions.YarnException;
+import org.apache.hadoop.yarn.security.client.TimelineDelegationTokenIdentifier;
+import org.apache.hadoop.yarn.util.ConverterUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.Serializable;
+import java.nio.ByteBuffer;
+import java.text.DateFormat;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.Date;
+import java.util.Iterator;
+import java.util.List;
+
+import static org.apache.hadoop.yarn.conf.YarnConfiguration.*;
+
+/**
+ * Utils to work with credentials and tokens.
+ *
+ * Designed to be movable to Hadoop core
+ */
+public final class CredentialUtils {
+
+  private CredentialUtils() {
+  }
+
+  private static final Logger LOG =
+      LoggerFactory.getLogger(CredentialUtils.class);
+
+  /**
+   * Save credentials to a byte buffer. Returns null if there were no
+   * credentials to save
+   * @param credentials credential set
+   * @return a byte buffer of serialized tokens
+   * @throws IOException if the credentials could not be written to the stream
+   */
+  public static ByteBuffer marshallCredentials(Credentials credentials) throws IOException {
+    ByteBuffer buffer = null;
+    if (!credentials.getAllTokens().isEmpty()) {
+      DataOutputBuffer dob = new DataOutputBuffer();
+      try {
+        credentials.writeTokenStorageToStream(dob);
+      } finally {
+        dob.close();
+      }
+      buffer = ByteBuffer.wrap(dob.getData(), 0, dob.getLength());
+    }
+    return buffer;
+  }
+
+  /**
+   * Save credentials to a file
+   * @param file file to save to (will be overwritten)
+   * @param credentials credentials to write
+   * @throws IOException
+   */
+  public static void saveTokens(File file,
+      Credentials credentials) throws IOException {
+    try(DataOutputStream daos = new DataOutputStream(
+        new FileOutputStream(file))) {
+      credentials.writeTokenStorageToStream(daos);
+    }
+  }
+
+  /**
+   * Look up and return the resource manager's principal. This method
+   * automatically does the <code>_HOST</code> replacement in the principal and
+   * correctly handles HA resource manager configurations.
+   *
+   * From: YARN-4629
+   * @param conf the {@link Configuration} file from which to read the
+   * principal
+   * @return the resource manager's principal string
+   * @throws IOException thrown if there's an error replacing the host name
+   */
+  public static String getRMPrincipal(Configuration conf) throws IOException {
+    String principal = conf.get(RM_PRINCIPAL, "");
+    String hostname;
+    Preconditions.checkState(!principal.isEmpty(), "Not set: " + RM_PRINCIPAL);
+
+    if (HAUtil.isHAEnabled(conf)) {
+      YarnConfiguration yarnConf = new YarnConfiguration(conf);
+      if (yarnConf.get(RM_HA_ID) == null) {
+        // If RM_HA_ID is not configured, use the first of RM_HA_IDS.
+        // Any valid RM HA ID should work.
+        String[] rmIds = yarnConf.getStrings(RM_HA_IDS);
+        Preconditions.checkState((rmIds != null) && (rmIds.length > 0),
+            "Not set " + RM_HA_IDS);
+        yarnConf.set(RM_HA_ID, rmIds[0]);
+      }
+
+      hostname = yarnConf.getSocketAddr(
+          RM_ADDRESS,
+          DEFAULT_RM_ADDRESS,
+          DEFAULT_RM_PORT).getHostName();
+    } else {
+      hostname = conf.getSocketAddr(
+          RM_ADDRESS,
+          DEFAULT_RM_ADDRESS,
+          DEFAULT_RM_PORT).getHostName();
+    }
+    return SecurityUtil.getServerPrincipal(principal, hostname);
+  }
+
+  /**
+   * Create and add any filesystem delegation tokens with
+   * the RM(s) configured to be able to renew them. Returns null
+   * on an insecure cluster (i.e. harmless)
+   * @param conf configuration
+   * @param fs filesystem
+   * @param credentials credentials to update
+   * @return a list of all added tokens.
+   * @throws IOException
+   */
+  public static Token<?>[] addRMRenewableFSDelegationTokens(Configuration conf,
+      FileSystem fs,
+      Credentials credentials) throws IOException {
+    Preconditions.checkArgument(conf != null);
+    Preconditions.checkArgument(credentials != null);
+    if (UserGroupInformation.isSecurityEnabled()) {
+      return fs.addDelegationTokens(CredentialUtils.getRMPrincipal(conf),
+          credentials);
+    }
+    return null;
+  }
+
+  /**
+   * Add an FS delegation token which can be renewed by the current user
+   * @param fs filesystem
+   * @param credentials credentials to update
+   * @throws IOException problems.
+   */
+  public static void addSelfRenewableFSDelegationTokens(
+      FileSystem fs,
+      Credentials credentials) throws IOException {
+    Preconditions.checkArgument(fs != null);
+    Preconditions.checkArgument(credentials != null);
+    fs.addDelegationTokens(
+        getSelfRenewer(),
+        credentials);
+  }
+
+  public static String getSelfRenewer() throws IOException {
+    return UserGroupInformation.getLoginUser().getShortUserName();
+  }
+
+  /**
+   * Create and add an RM delegation token to the credentials
+   * @param yarnClient Yarn Client
+   * @param credentials to add token to
+   * @return the token which was added
+   * @throws IOException
+   * @throws YarnException
+   */
+  public static Token<TokenIdentifier> addRMDelegationToken(YarnClient yarnClient,
+      Credentials credentials)
+      throws IOException, YarnException {
+    Configuration conf = yarnClient.getConfig();
+    Text rmPrincipal = new Text(CredentialUtils.getRMPrincipal(conf));
+    Text rmDTService = ClientRMProxy.getRMDelegationTokenService(conf);
+    Token<TokenIdentifier> rmDelegationToken =
+        ConverterUtils.convertFromYarn(
+            yarnClient.getRMDelegationToken(rmPrincipal),
+            rmDTService);
+    credentials.addToken(rmDelegationToken.getService(), rmDelegationToken);
+    return rmDelegationToken;
+  }
+
+  public static Token<TimelineDelegationTokenIdentifier> maybeAddTimelineToken(
+      Configuration conf,
+      Credentials credentials)
+      throws IOException, YarnException {
+    if (conf.getBoolean(YarnConfiguration.TIMELINE_SERVICE_ENABLED, false)) {
+      LOG.debug("Timeline service enabled -fetching token");
+
+      try(TimelineClient timelineClient = TimelineClient.createTimelineClient()) {
+        timelineClient.init(conf);
+        timelineClient.start();
+        Token<TimelineDelegationTokenIdentifier> token =
+            timelineClient.getDelegationToken(
+                CredentialUtils.getRMPrincipal(conf));
+        credentials.addToken(token.getService(), token);
+        return token;
+      }
+    } else {
+      LOG.debug("Timeline service is disabled");
+      return null;
+    }
+  }
+
+  /**
+   * Filter a list of tokens from a set of credentials
+   * @param credentials credential source (a new credential set os re
+   * @param filter List of tokens to strip out
+   * @return a new, filtered, set of credentials
+   */
+  public static Credentials filterTokens(Credentials credentials,
+      List<Text> filter) {
+    Credentials result = new Credentials(credentials);
+    Iterator<Token<? extends TokenIdentifier>> iter =
+        result.getAllTokens().iterator();
+    while (iter.hasNext()) {
+      Token<? extends TokenIdentifier> token = iter.next();
+      LOG.debug("Token {}", token.getKind());
+      if (filter.contains(token.getKind())) {
+        LOG.debug("Filtering token {}", token.getKind());
+        iter.remove();
+      }
+    }
+    return result;
+  }
+
+  public static String dumpTokens(Credentials credentials, String separator) {
+    ArrayList<Token<? extends TokenIdentifier>> sorted =
+        new ArrayList<>(credentials.getAllTokens());
+    Collections.sort(sorted, new TokenComparator());
+    StringBuilder buffer = new StringBuilder(sorted.size()* 128);
+    for (Token<? extends TokenIdentifier> token : sorted) {
+      buffer.append(tokenToString(token)).append(separator);
+    }
+    return buffer.toString();
+  }
+
+  /**
+   * Create a string for people to look at
+   * @param token token to convert to a string form
+   * @return a printable view of the token
+   */
+  public static String tokenToString(Token<? extends TokenIdentifier> token) {
+    DateFormat df = DateFormat.getDateTimeInstance(
+        DateFormat.SHORT, DateFormat.SHORT);
+    StringBuilder buffer = new StringBuilder(128);
+    buffer.append(token.toString());
+    try {
+      TokenIdentifier ti = token.decodeIdentifier();
+      buffer.append("; ").append(ti);
+      if (ti instanceof AbstractDelegationTokenIdentifier) {
+        // details in human readable form, and compensate for information HDFS DT omits
+        AbstractDelegationTokenIdentifier dt = (AbstractDelegationTokenIdentifier) ti;
+        buffer.append("; Renewer: ").append(dt.getRenewer());
+        buffer.append("; Issued: ")
+            .append(df.format(new Date(dt.getIssueDate())));
+        buffer.append("; Max Date: ")
+            .append(df.format(new Date(dt.getMaxDate())));
+      }
+    } catch (IOException e) {
+      //marshall problem; not ours
+      LOG.debug("Failed to decode {}: {}", token, e, e);
+    }
+    return buffer.toString();
+  }
+
+  /**
+   * Get the expiry time of a token.
+   * @param token token to examine
+   * @return the time in milliseconds after which the token is invalid.
+   * @throws IOException
+   */
+  public static long getTokenExpiryTime(Token token) throws IOException {
+    TokenIdentifier identifier = token.decodeIdentifier();
+    Preconditions.checkState(identifier instanceof AbstractDelegationTokenIdentifier,
+        "Token %s of type: %s has an identifier which cannot be examined: %s",
+        token, token.getClass(), identifier);
+    AbstractDelegationTokenIdentifier id =
+        (AbstractDelegationTokenIdentifier) identifier;
+    return id.getMaxDate();
+  }
+
+  private static class TokenComparator
+      implements Comparator<Token<? extends TokenIdentifier>>, Serializable {
+    @Override
+    public int compare(Token<? extends TokenIdentifier> left,
+        Token<? extends TokenIdentifier> right) {
+      return left.getKind().toString().compareTo(right.getKind().toString());
+    }
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/JavaCommandLineBuilder.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/JavaCommandLineBuilder.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/JavaCommandLineBuilder.java
new file mode 100644
index 0000000..cbcb0d6
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/containerlaunch/JavaCommandLineBuilder.java
@@ -0,0 +1,181 @@
+/*
+ * 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.hadoop.yarn.service.containerlaunch;
+
+
+import com.google.common.base.Preconditions;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.yarn.api.ApplicationConstants;
+import org.apache.hadoop.yarn.service.utils.SliderUtils;
+import org.apache.hadoop.yarn.service.exceptions.BadConfigException;
+
+import java.util.Map;
+
+/**
+ * Command line builder purely for the Java CLI.
+ * Some of the <code>define</code> methods are designed to work with Hadoop tool and
+ * Slider launcher applications.
+ */
+public class JavaCommandLineBuilder extends CommandLineBuilder {
+
+  public JavaCommandLineBuilder() {
+    add(getJavaBinary());
+  }
+
+  /**
+   * Get the java binary. This is called in the constructor so don't try and
+   * do anything other than return a constant.
+   * @return the path to the Java binary
+   */
+  protected String getJavaBinary() {
+    return ApplicationConstants.Environment.JAVA_HOME.$$() + "/bin/java";
+  }
+
+  /**
+   * Set the size of the heap if a non-empty heap is passed in. 
+   * @param heap empty string or something like "128M" ,"1G" etc. The value is
+   * trimmed.
+   */
+  public void setJVMHeap(String heap) {
+    if (SliderUtils.isSet(heap)) {
+      add("-Xmx" + heap.trim());
+    }
+  }
+
+  /**
+   * Turn Java assertions on
+   */
+  public void enableJavaAssertions() {
+    add("-ea");
+    add("-esa");
+  }
+
+  /**
+   * Add a system property definition -must be used before setting the main entry point
+   * @param property
+   * @param value
+   */
+  public void sysprop(String property, String value) {
+    Preconditions.checkArgument(property != null, "null property name");
+    Preconditions.checkArgument(value != null, "null value");
+    add("-D" + property + "=" + value);
+  }
+  
+  public JavaCommandLineBuilder forceIPv4() {
+    sysprop("java.net.preferIPv4Stack", "true");
+    return this;
+  }
+  
+  public JavaCommandLineBuilder headless() {
+    sysprop("java.awt.headless", "true");
+    return this;
+  }
+
+  public boolean addConfOption(Configuration conf, String key) {
+    return defineIfSet(key, conf.get(key));
+  }
+
+  /**
+   * Add a varargs list of configuration parameters —if they are present
+   * @param conf configuration source
+   * @param keys keys
+   */
+  public void addConfOptions(Configuration conf, String... keys) {
+    for (String key : keys) {
+      addConfOption(conf, key);
+    }
+  }
+
+  /**
+   * Add all configuration options which match the prefix
+   * @param conf configuration
+   * @param prefix prefix, e.g {@code "slider."}
+   * @return the number of entries copied
+   */
+  public int addPrefixedConfOptions(Configuration conf, String prefix) {
+    int copied = 0;
+    for (Map.Entry<String, String> entry : conf) {
+      if (entry.getKey().startsWith(prefix)) {
+        define(entry.getKey(), entry.getValue());
+        copied++;
+      }
+    }
+    return copied;
+  }
+
+  /**
+   * Ass a configuration option to the command line of  the application
+   * @param conf configuration
+   * @param key key
+   * @param defVal default value
+   * @return the resolved configuration option
+   * @throws IllegalArgumentException if key is null or the looked up value
+   * is null (that is: the argument is missing and devVal was null.
+   */
+  public String addConfOptionToCLI(Configuration conf,
+      String key,
+      String defVal) {
+    Preconditions.checkArgument(key != null, "null key");
+    String val = conf.get(key, defVal);
+    define(key, val);
+    return val;
+  }
+
+  /**
+   * Add a <code>-D key=val</code> command to the CLI. This is very Hadoop API
+   * @param key key
+   * @param val value
+   * @throws IllegalArgumentException if either argument is null
+   */
+  public void define(String key, String val) {
+    Preconditions.checkArgument(key != null, "null key");
+    Preconditions.checkArgument(val != null, "null value");
+    add("-D", key + "=" + val);
+  }
+
+  /**
+   * Add a <code>-D key=val</code> command to the CLI if <code>val</code>
+   * is not null
+   * @param key key
+   * @param val value
+   */
+  public boolean defineIfSet(String key, String val) {
+    Preconditions.checkArgument(key != null, "null key");
+    if (val != null) {
+      define(key, val);
+      return true;
+    } else {
+      return false;
+    }
+  }
+
+  /**
+   * Add a mandatory config option
+   * @param conf configuration
+   * @param key key
+   * @throws BadConfigException if the key is missing
+   */
+  public void addMandatoryConfOption(Configuration conf,
+      String key) throws BadConfigException {
+    if (!addConfOption(conf, key)) {
+      throw new BadConfigException("Missing configuration option: " + key);
+    }
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadClusterStateException.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadClusterStateException.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadClusterStateException.java
new file mode 100644
index 0000000..db9de7a
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadClusterStateException.java
@@ -0,0 +1,36 @@
+/*
+ * 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.hadoop.yarn.service.exceptions;
+
+import org.apache.hadoop.yarn.service.exceptions.SliderException;
+
+/**
+ * The system is in a bad state
+ */
+public class BadClusterStateException extends SliderException {
+  public BadClusterStateException(String message,
+                                  Object... args) {
+    super(EXIT_BAD_STATE, message, args);
+  }
+
+  public BadClusterStateException(Throwable throwable,
+                                  String message, Object... args) {
+    super(EXIT_BAD_STATE, throwable, message, args);
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadCommandArgumentsException.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadCommandArgumentsException.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadCommandArgumentsException.java
new file mode 100644
index 0000000..41e3251
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadCommandArgumentsException.java
@@ -0,0 +1,30 @@
+/*
+ * 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.hadoop.yarn.service.exceptions;
+
+public class BadCommandArgumentsException extends SliderException {
+  public BadCommandArgumentsException(String s, Object... args) {
+    super(EXIT_COMMAND_ARGUMENT_ERROR, s, args);
+  }
+
+  public BadCommandArgumentsException(Throwable throwable, String message,
+                                      Object... args) {
+    super(EXIT_COMMAND_ARGUMENT_ERROR, throwable, message, args);
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadConfigException.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadConfigException.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadConfigException.java
new file mode 100644
index 0000000..8199c3c
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/BadConfigException.java
@@ -0,0 +1,39 @@
+/*
+ * 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.hadoop.yarn.service.exceptions;
+
+/**
+ * An exception to raise on a bad configuration
+ */
+public class BadConfigException extends SliderException {
+
+  public BadConfigException(String s) {
+    super(EXIT_BAD_CONFIGURATION, s);
+  }
+
+  public BadConfigException(String message, Object... args) {
+    super(EXIT_BAD_CONFIGURATION, message, args);
+  }
+
+  public BadConfigException(
+                            Throwable throwable,
+                            String message, Object... args) {
+    super(EXIT_BAD_CONFIGURATION, throwable, message, args);
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ErrorStrings.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ErrorStrings.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ErrorStrings.java
new file mode 100644
index 0000000..3577b59
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ErrorStrings.java
@@ -0,0 +1,57 @@
+/*
+ * 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.hadoop.yarn.service.exceptions;
+
+public interface ErrorStrings {
+  String E_UNSTABLE_CLUSTER = "Unstable Application Instance :";
+  String E_CLUSTER_RUNNING = "Application Instance running";
+  String E_ALREADY_EXISTS = "already exists";
+  String PRINTF_E_INSTANCE_ALREADY_EXISTS = "Application Instance \"%s\" already exists and is defined in %s";
+  String PRINTF_E_INSTANCE_DIR_ALREADY_EXISTS = "Application Instance dir already exists: %s";
+  String E_MISSING_PATH = "Missing path ";
+  String E_INCOMPLETE_CLUSTER_SPEC =
+    "Cluster specification is marked as incomplete: ";
+  String E_UNKNOWN_INSTANCE = "Unknown application instance ";
+  String E_DESTROY_CREATE_RACE_CONDITION =
+      "created while it was being destroyed";
+  String E_UNKNOWN_ROLE = "Unknown role ";
+  /**
+   * ERROR Strings
+   */
+  String ERROR_NO_ACTION = "No action specified";
+  String ERROR_UNKNOWN_ACTION = "Unknown command: ";
+  String ERROR_NOT_ENOUGH_ARGUMENTS =
+    "Not enough arguments for action: ";
+  String ERROR_PARSE_FAILURE =
+      "Failed to parse ";
+  /**
+   * All the remaining values after argument processing
+   */
+  String ERROR_TOO_MANY_ARGUMENTS =
+    "Too many arguments";
+  String ERROR_DUPLICATE_ENTRY = "Duplicate entry for ";
+  String E_APPLICATION_NOT_RUNNING = "Application not running";
+  String E_FINISHED_APPLICATION = E_APPLICATION_NOT_RUNNING + ": %s state=%s ";
+  String E_NO_IMAGE_OR_HOME_DIR_SPECIFIED =
+    "Neither an image path nor binary home directory were specified";
+  String E_BOTH_IMAGE_AND_HOME_DIR_SPECIFIED =
+    "Both application image path and home dir have been provided";
+  String E_CONFIGURATION_DIRECTORY_NOT_FOUND =
+    "Configuration directory \"%s\" not found";
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ExitCodeProvider.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ExitCodeProvider.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ExitCodeProvider.java
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index 0000000..d66b860
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ExitCodeProvider.java
@@ -0,0 +1,32 @@
+/*
+ *  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.hadoop.yarn.service.exceptions;
+
+/**
+ * Get the exit code of an exception. Making it an interface allows
+ * us to retrofit exit codes onto existing classes
+ */
+public interface ExitCodeProvider {
+
+  /**
+   * Method to get the exit code
+   * @return the exit code
+   */
+  int  getExitCode();
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/LauncherExitCodes.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/LauncherExitCodes.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/LauncherExitCodes.java
new file mode 100644
index 0000000..9657536
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/LauncherExitCodes.java
@@ -0,0 +1,196 @@
+/*
+ * 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.hadoop.yarn.service.exceptions;
+
+/*
+ * Common Exit codes
+ * <p>
+ * Exit codes from 64 up are application specific.
+ * <p>
+ * Many of the exit codes are designed to resemble HTTP error codes,
+ * squashed into a single byte. e.g 44 , "not found" is the equivalent
+ * of 404
+ * <pre>
+ *    0-10: general command issues
+ *   30-39: equivalent to the 3XX responses, where those responses are
+ *          considered errors by the application.
+ *   40-49: request-related errors
+ *   50-59: server-side problems. These may be triggered by the request.
+ *   64-  : application specific error codes
+ * </pre>
+ */
+public interface LauncherExitCodes {
+  
+  /**
+   * 0: success
+   */
+  int EXIT_SUCCESS                    =  0;
+
+  /**
+   * -1: generic "false" response. The operation worked but
+   * the result was not true
+   */
+  int EXIT_FALSE                      = -1;
+
+  /**
+   * Exit code when a client requested service termination: {@value}
+   */
+  int EXIT_CLIENT_INITIATED_SHUTDOWN  =  1;
+
+  /**
+   * Exit code when targets could not be launched: {@value}
+   */
+  int EXIT_TASK_LAUNCH_FAILURE        =  2;
+
+  /**
+   * Exit code when a control-C, kill -3, signal was picked up: {@value}
+   */
+  int EXIT_INTERRUPTED                = 3;
+
+  /**
+   * Exit code when a usage message was printed: {@value}
+   */
+  int EXIT_USAGE                      = 4;
+
+  /**
+   * Exit code when something happened but we can't be specific: {@value}
+   */
+  int EXIT_OTHER_FAILURE               = 5;
+
+  /**
+   * Exit code on connectivity problems: {@value}
+   */
+  int EXIT_MOVED                      = 31;
+  
+  /**
+   * found: {@value}.
+   * <p>
+   * This is low value as in HTTP it is normally a success/redirect;
+   * whereas on the command line 0 is the sole success code.
+   * <p>
+   * <code>302 Found</code>
+   */
+  int EXIT_FOUND                      = 32;
+
+  /**
+   * Exit code on a request where the destination has not changed
+   * and (somehow) the command specified that this is an error.
+   * That is, this exit code is somehow different from a "success"
+   * : {@value}
+   * <p>
+   * <code>304 Not Modified </code>
+  */
+  int EXIT_NOT_MODIFIED               = 34;
+
+  /**
+   * Exit code when the command line doesn't parse: {@value}, or
+   * when it is otherwise invalid.
+   * <p>
+   * <code>400 BAD REQUEST</code>
+   */
+  int EXIT_COMMAND_ARGUMENT_ERROR     = 40;
+
+  /**
+   * The request requires user authentication: {@value}
+   * <p>
+   * <code>401 Unauthorized</code>
+   */
+  int EXIT_UNAUTHORIZED               = 41;
+  
+  /**
+   * Forbidden action: {@value}
+   * <p>
+   * <code>403: Forbidden</code>
+   */
+  int EXIT_FORBIDDEN                  = 43;
+  
+  /**
+   * Something was not found: {@value}
+   * <p>
+   * <code>404: NOT FOUND</code>
+   */
+  int EXIT_NOT_FOUND                  = 44;
+
+  /**
+   * The operation is not allowed: {@value}
+   * <p>
+   * <code>405: NOT ALLOWED</code>
+   */
+  int EXIT_OPERATION_NOT_ALLOWED       = 45;
+
+  /**
+   * The command is somehow not acceptable: {@value}
+   * <p>
+   * <code>406: NOT ACCEPTABLE</code>
+   */
+  int EXIT_NOT_ACCEPTABLE            = 46;
+
+  /**
+   * Exit code on connectivity problems: {@value}
+   * <p>
+   * <code>408: Request Timeout</code>
+   */
+  int EXIT_CONNECTIVITY_PROBLEM       = 48;
+
+  /**
+   * The request could not be completed due to a conflict with the current
+   * state of the resource.  {@value}
+   * <p>
+   * <code>409: conflict</code>
+   */
+  int EXIT_CONFLICT                   = 49;
+
+  /**
+   * internal error: {@value}
+   * <p>
+   * <code>500 Internal Server Error</code>
+   */
+  int EXIT_INTERNAL_ERROR             = 50;
+
+  /**
+   * Unimplemented feature: {@value}
+   * <p>
+   * <code>501: Not Implemented</code>
+   */
+  int EXIT_UNIMPLEMENTED              = 51;
+
+  /**
+   * Service Unavailable; it may be available later: {@value}
+   * <p>
+   * <code>503 Service Unavailable</code>
+   */
+  int EXIT_SERVICE_UNAVAILABLE        = 53;
+
+  /**
+   * The application does not support, or refuses to support this version: {@value}.
+   * If raised, this is expected to be raised server-side and likely due
+   * to client/server version incompatibilities.
+   * <p>
+   * <code> 505: Version Not Supported</code>
+   */
+  int EXIT_UNSUPPORTED_VERSION        = 55;
+
+  /**
+   * Exit code when an exception was thrown from the service: {@value}
+   * <p>
+   * <code>5XX</code>
+   */
+  int EXIT_EXCEPTION_THROWN           = 56;
+
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/RestApiErrorMessages.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/RestApiErrorMessages.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/RestApiErrorMessages.java
new file mode 100644
index 0000000..7be23f3
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/RestApiErrorMessages.java
@@ -0,0 +1,92 @@
+/*
+ * 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.hadoop.yarn.service.exceptions;
+
+public interface RestApiErrorMessages {
+  String ERROR_APPLICATION_NAME_INVALID =
+      "Application name is either empty or not provided";
+  String ERROR_APPLICATION_NAME_INVALID_FORMAT =
+      "Application name %s is not valid - only lower case letters, digits, " +
+          "underscore and hyphen are allowed, and the name must be no more " +
+          "than 63 characters";
+  String ERROR_COMPONENT_NAME_INVALID =
+      "Component name must be no more than %s characters: %s";
+  String ERROR_USER_NAME_INVALID =
+      "User name must be no more than 63 characters";
+
+  String ERROR_APPLICATION_NOT_RUNNING = "Application not running";
+  String ERROR_APPLICATION_DOES_NOT_EXIST = "Application not found";
+  String ERROR_APPLICATION_IN_USE = "Application already exists in started"
+      + " state";
+  String ERROR_APPLICATION_INSTANCE_EXISTS = "Application already exists in"
+      + " stopped/failed state (either restart with PUT or destroy with DELETE"
+      + " before creating a new one)";
+
+  String ERROR_SUFFIX_FOR_COMPONENT =
+      " for component %s (nor at the global level)";
+  String ERROR_ARTIFACT_INVALID = "Artifact is not provided";
+  String ERROR_ARTIFACT_FOR_COMP_INVALID =
+      ERROR_ARTIFACT_INVALID + ERROR_SUFFIX_FOR_COMPONENT;
+  String ERROR_ARTIFACT_ID_INVALID =
+      "Artifact id (like docker image name) is either empty or not provided";
+  String ERROR_ARTIFACT_ID_FOR_COMP_INVALID =
+      ERROR_ARTIFACT_ID_INVALID + ERROR_SUFFIX_FOR_COMPONENT;
+
+  String ERROR_RESOURCE_INVALID = "Resource is not provided";
+  String ERROR_RESOURCE_FOR_COMP_INVALID =
+      ERROR_RESOURCE_INVALID + ERROR_SUFFIX_FOR_COMPONENT;
+  String ERROR_RESOURCE_MEMORY_INVALID =
+      "Application resource or memory not provided";
+  String ERROR_RESOURCE_CPUS_INVALID =
+      "Application resource or cpus not provided";
+  String ERROR_RESOURCE_CPUS_INVALID_RANGE =
+      "Unacceptable no of cpus specified, either zero or negative";
+  String ERROR_RESOURCE_MEMORY_FOR_COMP_INVALID =
+      ERROR_RESOURCE_MEMORY_INVALID + ERROR_SUFFIX_FOR_COMPONENT;
+  String ERROR_RESOURCE_CPUS_FOR_COMP_INVALID =
+      ERROR_RESOURCE_CPUS_INVALID + ERROR_SUFFIX_FOR_COMPONENT;
+  String ERROR_RESOURCE_CPUS_FOR_COMP_INVALID_RANGE =
+      ERROR_RESOURCE_CPUS_INVALID_RANGE
+          + " for component %s (or at the global level)";
+  String ERROR_CONTAINERS_COUNT_INVALID =
+      "Invalid no of containers specified";
+  String ERROR_CONTAINERS_COUNT_FOR_COMP_INVALID =
+      ERROR_CONTAINERS_COUNT_INVALID + ERROR_SUFFIX_FOR_COMPONENT;
+  String ERROR_DEPENDENCY_INVALID = "Dependency %s for component %s is " +
+      "invalid, does not exist as a component";
+  String ERROR_DEPENDENCY_CYCLE = "Invalid dependencies, a cycle may " +
+      "exist: %s";
+
+  String ERROR_RESOURCE_PROFILE_MULTIPLE_VALUES_NOT_SUPPORTED =
+      "Cannot specify" + " cpus/memory along with profile";
+  String ERROR_RESOURCE_PROFILE_MULTIPLE_VALUES_FOR_COMP_NOT_SUPPORTED =
+      ERROR_RESOURCE_PROFILE_MULTIPLE_VALUES_NOT_SUPPORTED
+          + " for component %s";
+  String ERROR_RESOURCE_PROFILE_NOT_SUPPORTED_YET =
+      "Resource profile is not " + "supported yet. Please specify cpus/memory.";
+
+  String ERROR_NULL_ARTIFACT_ID =
+      "Artifact Id can not be null if artifact type is none";
+  String ERROR_ABSENT_NUM_OF_INSTANCE =
+      "Num of instances should appear either globally or per component";
+  String ERROR_ABSENT_LAUNCH_COMMAND =
+      "Launch_command is required when type is not DOCKER";
+
+  String ERROR_QUICKLINKS_FOR_COMP_INVALID = "Quicklinks specified at"
+      + " component level, needs corresponding values set at application level";
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ServiceLaunchException.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ServiceLaunchException.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ServiceLaunchException.java
new file mode 100644
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--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/ServiceLaunchException.java
@@ -0,0 +1,73 @@
+/*
+ *  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.hadoop.yarn.service.exceptions;
+
+
+import org.apache.hadoop.yarn.exceptions.YarnException;
+
+/**
+ * A service launch exception that includes an exit code;
+ * when caught by the ServiceLauncher, it will convert that
+ * into a process exit code.
+ */
+public class ServiceLaunchException extends YarnException
+  implements ExitCodeProvider, LauncherExitCodes {
+
+  private final int exitCode;
+
+  /**
+   * Create an exception with the specific exit code
+   * @param exitCode exit code
+   * @param cause cause of the exception
+   */
+  public ServiceLaunchException(int exitCode, Throwable cause) {
+    super(cause);
+    this.exitCode = exitCode;
+  }
+
+  /**
+   * Create an exception with the specific exit code and text
+   * @param exitCode exit code
+   * @param message message to use in exception
+   */
+  public ServiceLaunchException(int exitCode, String message) {
+    super(message);
+    this.exitCode = exitCode;
+  }
+
+  /**
+   * Create an exception with the specific exit code, text and cause
+   * @param exitCode exit code
+   * @param message message to use in exception
+   * @param cause cause of the exception
+   */
+  public ServiceLaunchException(int exitCode, String message, Throwable cause) {
+    super(message, cause);
+    this.exitCode = exitCode;
+  }
+
+  /**
+   * Get the exit code
+   * @return the exit code
+   */
+  @Override
+  public int getExitCode() {
+    return exitCode;
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/SliderException.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/SliderException.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/SliderException.java
new file mode 100644
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--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/SliderException.java
@@ -0,0 +1,66 @@
+/*
+ * 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.hadoop.yarn.service.exceptions;
+
+import org.apache.hadoop.yarn.service.conf.SliderExitCodes;
+
+public class SliderException extends ServiceLaunchException implements
+    SliderExitCodes {
+  public SliderException() {
+    super(EXIT_EXCEPTION_THROWN, "SliderException");
+  }
+
+  public SliderException(int code, String message) {
+    super(code, message);
+  }
+
+  public SliderException(String s) {
+    super(EXIT_EXCEPTION_THROWN, s);
+  }
+
+  public SliderException(String s, Throwable throwable) {
+    super(EXIT_EXCEPTION_THROWN, s, throwable);
+  }
+
+  /**
+   * Format the exception as you create it
+   * @param code exit code
+   * @param message exception message -sprintf formatted
+   * @param args arguments for the formatting
+   */
+  public SliderException(int code, String message, Object... args) {
+    super(code, String.format(message, args));
+  }
+
+  /**
+   * Format the exception, include a throwable. 
+   * The throwable comes before the message so that it is out of the varargs
+   * @param code exit code
+   * @param throwable thrown
+   * @param message message
+   * @param args arguments
+   */
+  public SliderException(int code,
+      Throwable throwable,
+      String message,
+      Object... args) {
+    super(code, String.format(message, args), throwable);
+  }
+
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/UsageException.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/UsageException.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/UsageException.java
new file mode 100644
index 0000000..3a9fa25
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/exceptions/UsageException.java
@@ -0,0 +1,34 @@
+/*
+ * 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.hadoop.yarn.service.exceptions;
+
+/**
+ * Used to raise a usage exception ... this has the exit code
+ * {@link #EXIT_USAGE}
+ */
+public class UsageException extends SliderException {
+  public UsageException(String s, Object... args) {
+    super(EXIT_USAGE, s, args);
+  }
+
+  public UsageException(Throwable throwable, String message,
+      Object... args) {
+    super(EXIT_USAGE, throwable, message, args);
+  }
+}

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractClientProvider.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractClientProvider.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractClientProvider.java
index 6c91a13..0d11be2 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractClientProvider.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractClientProvider.java
@@ -19,18 +19,12 @@
 package org.apache.hadoop.yarn.service.provider;
 
 import org.apache.commons.lang.StringUtils;
-import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.registry.client.api.RegistryOperations;
-import org.apache.slider.api.resource.Artifact;
-import org.apache.slider.api.resource.ConfigFile;
-import org.apache.slider.common.tools.SliderFileSystem;
-import org.apache.slider.common.tools.SliderUtils;
-import org.apache.slider.core.exceptions.SliderException;
-import org.codehaus.jettison.json.JSONObject;
-
-import java.io.File;
+import org.apache.hadoop.yarn.service.api.records.Artifact;
+import org.apache.hadoop.yarn.service.api.records.ConfigFile;
+import org.apache.hadoop.yarn.service.utils.SliderUtils;
+
 import java.io.IOException;
 import java.nio.file.Paths;
 import java.util.HashSet;

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractProviderService.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractProviderService.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractProviderService.java
index 6f9f5175..504680d 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractProviderService.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/AbstractProviderService.java
@@ -20,14 +20,14 @@ package org.apache.hadoop.yarn.service.provider;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.yarn.api.ApplicationConstants;
 import org.apache.hadoop.yarn.service.conf.YarnServiceConf;
-import org.apache.slider.api.resource.Application;
-import org.apache.slider.api.resource.Component;
-import org.apache.hadoop.yarn.service.conf.SliderKeys;
-import org.apache.slider.common.tools.SliderFileSystem;
-import org.apache.slider.common.tools.SliderUtils;
-import org.apache.slider.core.exceptions.SliderException;
-import org.apache.slider.core.launch.AbstractLauncher;
-import org.apache.slider.core.launch.CommandLineBuilder;
+import org.apache.hadoop.yarn.service.api.records.Application;
+import org.apache.hadoop.yarn.service.api.records.Component;
+import org.apache.hadoop.yarn.service.conf.YarnServiceConstants;
+import org.apache.hadoop.yarn.service.utils.SliderFileSystem;
+import org.apache.hadoop.yarn.service.utils.SliderUtils;
+import org.apache.hadoop.yarn.service.exceptions.SliderException;
+import org.apache.hadoop.yarn.service.containerlaunch.AbstractLauncher;
+import org.apache.hadoop.yarn.service.containerlaunch.CommandLineBuilder;
 import org.apache.hadoop.yarn.service.compinstance.ComponentInstance;
 import org.apache.hadoop.yarn.service.ServiceContext;
 import org.slf4j.Logger;
@@ -42,7 +42,7 @@ import static org.apache.hadoop.yarn.service.conf.YarnServiceConf.CONTAINER_RETR
 import static org.apache.hadoop.yarn.service.utils.ServiceApiUtil.$;
 
 public abstract class AbstractProviderService implements ProviderService,
-  SliderKeys {
+    YarnServiceConstants {
 
   protected static final Logger log =
       LoggerFactory.getLogger(AbstractProviderService.class);

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderFactory.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderFactory.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderFactory.java
index b53652a..83c9961 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderFactory.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderFactory.java
@@ -19,8 +19,7 @@
 package org.apache.hadoop.yarn.service.provider;
 
 import org.apache.hadoop.yarn.service.provider.defaultImpl.DefaultProviderFactory;
-import org.apache.slider.api.resource.Artifact;
-import org.apache.slider.core.exceptions.SliderException;
+import org.apache.hadoop.yarn.service.api.records.Artifact;
 import org.apache.hadoop.yarn.service.provider.docker.DockerProviderFactory;
 import org.apache.hadoop.yarn.service.provider.tarball.TarballProviderFactory;
 import org.slf4j.Logger;

http://git-wip-us.apache.org/repos/asf/hadoop/blob/43277ffd/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderService.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderService.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderService.java
index 306620d..9ef0176 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderService.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/hadoop/yarn/service/provider/ProviderService.java
@@ -19,10 +19,10 @@
 package org.apache.hadoop.yarn.service.provider;
 
 import org.apache.hadoop.conf.Configuration;
-import org.apache.slider.api.resource.Application;
-import org.apache.slider.common.tools.SliderFileSystem;
-import org.apache.slider.core.exceptions.SliderException;
-import org.apache.slider.core.launch.AbstractLauncher;
+import org.apache.hadoop.yarn.service.api.records.Application;
+import org.apache.hadoop.yarn.service.utils.SliderFileSystem;
+import org.apache.hadoop.yarn.service.exceptions.SliderException;
+import org.apache.hadoop.yarn.service.containerlaunch.AbstractLauncher;
 import org.apache.hadoop.yarn.service.compinstance.ComponentInstance;
 
 import java.io.IOException;


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