org.elasticsearch.hadoop.integration.HdpBootstrap.java Source code

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Here is the source code for org.elasticsearch.hadoop.integration.HdpBootstrap.java

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/*
 * Copyright 2013 the original author or authors.
 *
 * Licensed 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.elasticsearch.hadoop.integration;

import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;

import org.apache.commons.lang.reflect.FieldUtils;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapreduce.JobSubmissionFiles;
import org.elasticsearch.hadoop.util.TestSettings;
import org.elasticsearch.hadoop.util.TestUtils;

public class HdpBootstrap {

    private static boolean hackVerified = false;

    /**
     * Hack to allow Hadoop client to run on windows (which otherwise fails due to some permission problem).
     */
    public static void hackHadoopStagingOnWin() {
        // do the assignment only on Windows systems
        if (TestUtils.isWindows()) {
            // 0655 = -rwxr-xr-x
            JobSubmissionFiles.JOB_DIR_PERMISSION.fromShort((short) 0650);
            JobSubmissionFiles.JOB_FILE_PERMISSION.fromShort((short) 0650);

            // handle jar permissions as well - temporarily disable for CDH 4 / YARN
            try {
                Class<?> tdcm = Class.forName("org.apache.hadoop.filecache.TrackerDistributedCacheManager");
                FsPermission perm = (FsPermission) FieldUtils.readStaticField(tdcm, "PUBLIC_CACHE_OBJECT_PERM",
                        true);
                perm.fromShort((short) 0650);
            } catch (ClassNotFoundException cnfe) {
                //ignore
                return;
            } catch (Exception ex) {
                LogFactory.getLog(TestUtils.class).warn("Cannot set permission for TrackerDistributedCacheManager",
                        ex);
            }
        }
    }

    public static JobConf addProperties(JobConf conf, Properties props) {
        for (Entry<Object, Object> entry : props.entrySet()) {
            conf.set(entry.getKey().toString(), entry.getValue().toString());
        }
        return conf;
    }

    public static JobConf hadoopConfig() {
        if (!hackVerified) {
            hackVerified = true;
            // check local execution
            if ("local".equals(TestSettings.TESTING_PROPS.get("mapred.job.tracker"))) {
                hackHadoopStagingOnWin();
            }
            // damn HADOOP-9123
            System.setProperty("path.separator", ":");
        }

        JobConf conf = addProperties(new JobConf(), TestSettings.TESTING_PROPS);
        conf.setBoolean("mapred.used.genericoptionsparser", true);

        // provision if not local
        if (!isJtLocal(conf)) {
            Provisioner.provision(conf);
            HdfsUtils.rmr(conf, ".staging");
        }

        return conf;
    }

    public static Properties asProperties(Configuration cfg) {
        Properties props = new Properties();

        if (cfg != null) {
            for (Map.Entry<String, String> entry : cfg) {
                props.setProperty(entry.getKey(), entry.getValue());
            }
        }

        return props;
    }

    public static boolean isJtLocal(Configuration cfg) {
        return "local".equals(cfg.get("mapred.job.tracker"));
    }
}