/*
* Druid - a distributed column store.
* Copyright (C) 2012, 2013 Metamarkets Group Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package io.druid.indexer;
import com.google.api.client.util.Sets;
import com.google.common.base.Throwables;
import com.google.common.io.ByteStreams;
import com.google.common.io.Files;
import com.google.common.io.OutputSupplier;
import com.metamx.common.ISE;
import com.metamx.common.logger.Logger;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.filecache.DistributedCache;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.LocalFileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapreduce.Job;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import java.util.Set;
/**
*/
public class JobHelper
{
private static final Logger log = new Logger(JobHelper.class);
private static final Set<Path> existing = Sets.newHashSet();
public static void setupClasspath(
HadoopDruidIndexerConfig config,
Job groupByJob
)
throws IOException
{
String classpathProperty = System.getProperty("druid.hadoop.internal.classpath");
if (classpathProperty == null) {
classpathProperty = System.getProperty("java.class.path");
}
String[] jarFiles = classpathProperty.split(File.pathSeparator);
final Configuration conf = groupByJob.getConfiguration();
final FileSystem fs = FileSystem.get(conf);
Path distributedClassPath = new Path(config.getSchema().getTuningConfig().getWorkingPath(), "classpath");
if (fs instanceof LocalFileSystem) {
return;
}
for (String jarFilePath : jarFiles) {
File jarFile = new File(jarFilePath);
if (jarFile.getName().endsWith(".jar")) {
final Path hdfsPath = new Path(distributedClassPath, jarFile.getName());
if (!existing.contains(hdfsPath)) {
if (jarFile.getName().endsWith("SNAPSHOT.jar") || !fs.exists(hdfsPath)) {
log.info("Uploading jar to path[%s]", hdfsPath);
ByteStreams.copy(
Files.newInputStreamSupplier(jarFile),
new OutputSupplier<OutputStream>()
{
@Override
public OutputStream getOutput() throws IOException
{
return fs.create(hdfsPath);
}
}
);
}
existing.add(hdfsPath);
}
DistributedCache.addFileToClassPath(hdfsPath, conf, fs);
}
}
}
public static void injectSystemProperties(Job job)
{
final Configuration conf = job.getConfiguration();
for (String propName : System.getProperties().stringPropertyNames()) {
if (propName.startsWith("hadoop.")) {
conf.set(propName.substring("hadoop.".length()), System.getProperty(propName));
}
}
}
public static void ensurePaths(HadoopDruidIndexerConfig config)
{
// config.addInputPaths() can have side-effects ( boo! :( ), so this stuff needs to be done before anything else
try {
Job job = new Job(
new Configuration(),
String.format("%s-determine_partitions-%s", config.getDataSource(), config.getIntervals())
);
job.getConfiguration().set("io.sort.record.percent", "0.19");
injectSystemProperties(job);
config.addInputPaths(job);
}
catch (IOException e) {
throw Throwables.propagate(e);
}
}
public static boolean runJobs(List<Jobby> jobs, HadoopDruidIndexerConfig config)
{
String failedMessage = null;
for (Jobby job : jobs) {
if (failedMessage == null) {
if (!job.run()) {
failedMessage = String.format("Job[%s] failed!", job.getClass());
}
}
}
if (!config.getSchema().getTuningConfig().isLeaveIntermediate()) {
if (failedMessage == null || config.getSchema().getTuningConfig().isCleanupOnFailure()) {
Path workingPath = config.makeIntermediatePath();
log.info("Deleting path[%s]", workingPath);
try {
workingPath.getFileSystem(new Configuration()).delete(workingPath, true);
}
catch (IOException e) {
log.error(e, "Failed to cleanup path[%s]", workingPath);
}
}
}
if (failedMessage != null) {
throw new ISE(failedMessage);
}
return true;
}
}