/*
* 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.ambari.server.checks;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import org.apache.ambari.server.AmbariException;
import org.apache.ambari.server.controller.PrereqCheckRequest;
import org.apache.ambari.server.state.Cluster;
import org.apache.ambari.server.state.Config;
import org.apache.ambari.server.state.DesiredConfig;
import org.apache.ambari.server.state.stack.PrereqCheckStatus;
import org.apache.ambari.server.state.stack.PrerequisiteCheck;
import org.apache.ambari.server.state.stack.UpgradePack.PrerequisiteCheckConfig;
import org.apache.commons.lang.StringUtils;
import com.google.inject.Singleton;
/**
* Checks that MR jobs reference hadoop libraries from the distributed cache.
*/
@Singleton
@UpgradeCheck(group = UpgradeCheckGroup.NAMENODE_HA, order = 17.1f)
public class ServicesMapReduceDistributedCacheCheck extends AbstractCheckDescriptor {
static final String KEY_APP_CLASSPATH = "app_classpath";
static final String KEY_FRAMEWORK_PATH = "framework_path";
static final String KEY_NOT_DFS = "not_dfs";
static final String DFS_PROTOCOLS_REGEX_PROPERTY_NAME = "dfs-protocols-regex";
static final String DFS_PROTOCOLS_REGEX_DEFAULT = "^([^:]*dfs|wasb|ecs):.*";
@Override
public boolean isApplicable(PrereqCheckRequest request)
throws AmbariException {
if (!super.isApplicable(request, Arrays.asList("YARN"), true)) {
return false;
}
PrereqCheckStatus ha = request.getResult(CheckDescription.SERVICES_NAMENODE_HA);
if (null != ha && ha == PrereqCheckStatus.FAIL) {
return false;
}
return true;
}
/**
* Constructor.
*/
public ServicesMapReduceDistributedCacheCheck() {
super(CheckDescription.SERVICES_MR_DISTRIBUTED_CACHE);
}
@Override
public void perform(PrerequisiteCheck prerequisiteCheck, PrereqCheckRequest request) throws AmbariException {
String dfsProtocolsRegex = DFS_PROTOCOLS_REGEX_DEFAULT;
PrerequisiteCheckConfig prerequisiteCheckConfig = request.getPrerequisiteCheckConfig();
Map<String, String> checkProperties = null;
if(prerequisiteCheckConfig != null) {
checkProperties = prerequisiteCheckConfig.getCheckProperties(this.getClass().getName());
}
if(checkProperties != null && checkProperties.containsKey(DFS_PROTOCOLS_REGEX_PROPERTY_NAME)) {
dfsProtocolsRegex = checkProperties.get(DFS_PROTOCOLS_REGEX_PROPERTY_NAME);
}
final String clusterName = request.getClusterName();
final Cluster cluster = clustersProvider.get().getCluster(clusterName);
final String mrConfigType = "mapred-site";
final String coreSiteConfigType = "core-site";
final Map<String, DesiredConfig> desiredConfigs = cluster.getDesiredConfigs();
final DesiredConfig mrDesiredConfig = desiredConfigs.get(mrConfigType);
final DesiredConfig coreSiteDesiredConfig = desiredConfigs.get(coreSiteConfigType);
final Config mrConfig = cluster.getConfig(mrConfigType, mrDesiredConfig.getTag());
final Config coreSiteConfig = cluster.getConfig(coreSiteConfigType, coreSiteDesiredConfig.getTag());
final String applicationClasspath = mrConfig.getProperties().get("mapreduce.application.classpath");
final String frameworkPath = mrConfig.getProperties().get("mapreduce.application.framework.path");
final String defaultFS = coreSiteConfig.getProperties().get("fs.defaultFS");
List<String> errorMessages = new ArrayList<>();
if (applicationClasspath == null || applicationClasspath.isEmpty()) {
errorMessages.add(getFailReason(KEY_APP_CLASSPATH, prerequisiteCheck, request));
}
if (frameworkPath == null || frameworkPath.isEmpty()) {
errorMessages.add(getFailReason(KEY_FRAMEWORK_PATH, prerequisiteCheck, request));
}
if (!errorMessages.isEmpty()) {
prerequisiteCheck.getFailedOn().add("MAPREDUCE2");
prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL);
prerequisiteCheck.setFailReason(StringUtils.join(errorMessages, " "));
return;
}
if (!frameworkPath.matches(dfsProtocolsRegex) && (defaultFS == null || !defaultFS.matches(dfsProtocolsRegex))) {
prerequisiteCheck.getFailedOn().add("MAPREDUCE2");
prerequisiteCheck.setStatus(PrereqCheckStatus.FAIL);
prerequisiteCheck.setFailReason(getFailReason(KEY_NOT_DFS, prerequisiteCheck, request));
}
}
}