/**
* 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.hive.shims;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Iterator;
import java.net.URI;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.filecache.DistributedCache;
import org.apache.hadoop.fs.BlockLocation;
import org.apache.hadoop.fs.FSDataInputStream;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.PathFilter;
import org.apache.hadoop.fs.ProxyFileSystem;
import org.apache.hadoop.fs.Trash;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hive.shims.HadoopShims.DirectDecompressorShim;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.compress.CompressionCodec;
import org.apache.hadoop.mapred.JobTracker;
import org.apache.hadoop.mapred.MiniMRCluster;
import org.apache.hadoop.mapred.ClusterStatus;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.TaskLogServlet;
import org.apache.hadoop.mapred.WebHCatJTShim20S;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.JobID;
import org.apache.hadoop.mapreduce.JobStatus;
import org.apache.hadoop.mapreduce.OutputFormat;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.apache.hadoop.mapreduce.TaskAttemptID;
import org.apache.hadoop.mapreduce.TaskID;
import org.apache.hadoop.util.Progressable;
import org.apache.hadoop.mapred.lib.TotalOrderPartitioner;
import org.apache.hadoop.security.UserGroupInformation;
/**
* Implemention of shims against Hadoop 0.20 with Security.
*/
public class Hadoop20SShims extends HadoopShimsSecure {
@Override
public String getTaskAttemptLogUrl(JobConf conf,
String taskTrackerHttpAddress, String taskAttemptId)
throws MalformedURLException {
URL taskTrackerHttpURL = new URL(taskTrackerHttpAddress);
return TaskLogServlet.getTaskLogUrl(
taskTrackerHttpURL.getHost(),
Integer.toString(taskTrackerHttpURL.getPort()),
taskAttemptId);
}
@Override
public JobTrackerState getJobTrackerState(ClusterStatus clusterStatus) throws Exception {
JobTrackerState state;
switch (clusterStatus.getJobTrackerState()) {
case INITIALIZING:
return JobTrackerState.INITIALIZING;
case RUNNING:
return JobTrackerState.RUNNING;
default:
String errorMsg = "Unrecognized JobTracker state: " + clusterStatus.getJobTrackerState();
throw new Exception(errorMsg);
}
}
@Override
public org.apache.hadoop.mapreduce.TaskAttemptContext newTaskAttemptContext(Configuration conf, final Progressable progressable) {
return new org.apache.hadoop.mapreduce.TaskAttemptContext(conf, new TaskAttemptID()) {
@Override
public void progress() {
progressable.progress();
}
};
}
@Override
public TaskAttemptID newTaskAttemptID(JobID jobId, boolean isMap, int taskId, int id) {
return new TaskAttemptID(jobId.getJtIdentifier(), jobId.getId(), isMap, taskId, id);
}
@Override
public org.apache.hadoop.mapreduce.JobContext newJobContext(Job job) {
return new org.apache.hadoop.mapreduce.JobContext(job.getConfiguration(), job.getJobID());
}
@Override
public boolean isLocalMode(Configuration conf) {
return "local".equals(getJobLauncherRpcAddress(conf));
}
@Override
public String getJobLauncherRpcAddress(Configuration conf) {
return conf.get("mapred.job.tracker");
}
@Override
public void setJobLauncherRpcAddress(Configuration conf, String val) {
conf.set("mapred.job.tracker", val);
}
@Override
public String getJobLauncherHttpAddress(Configuration conf) {
return conf.get("mapred.job.tracker.http.address");
}
@Override
public boolean moveToAppropriateTrash(FileSystem fs, Path path, Configuration conf)
throws IOException {
// older versions of Hadoop don't have a Trash constructor based on the
// Path or FileSystem. So need to achieve this by creating a dummy conf.
// this needs to be filtered out based on version
Configuration dupConf = new Configuration(conf);
FileSystem.setDefaultUri(dupConf, fs.getUri());
Trash trash = new Trash(dupConf);
return trash.moveToTrash(path);
}
@Override
public long getDefaultBlockSize(FileSystem fs, Path path) {
return fs.getDefaultBlockSize();
}
@Override
public short getDefaultReplication(FileSystem fs, Path path) {
return fs.getDefaultReplication();
}
@Override
public void setTotalOrderPartitionFile(JobConf jobConf, Path partitionFile){
TotalOrderPartitioner.setPartitionFile(jobConf, partitionFile);
}
@Override
public Comparator<LongWritable> getLongComparator() {
return new Comparator<LongWritable>() {
@Override
public int compare(LongWritable o1, LongWritable o2) {
return o1.compareTo(o2);
}
};
}
/**
* Returns a shim to wrap MiniMrCluster
*/
public MiniMrShim getMiniMrCluster(Configuration conf, int numberOfTaskTrackers,
String nameNode, int numDir) throws IOException {
return new MiniMrShim(conf, numberOfTaskTrackers, nameNode, numDir);
}
/**
* Shim for MiniMrCluster
*/
public class MiniMrShim implements HadoopShims.MiniMrShim {
private final MiniMRCluster mr;
public MiniMrShim(Configuration conf, int numberOfTaskTrackers,
String nameNode, int numDir) throws IOException {
this.mr = new MiniMRCluster(numberOfTaskTrackers, nameNode, numDir);
}
@Override
public int getJobTrackerPort() throws UnsupportedOperationException {
return mr.getJobTrackerPort();
}
@Override
public void shutdown() throws IOException {
mr.shutdown();
}
@Override
public void setupConfiguration(Configuration conf) {
setJobLauncherRpcAddress(conf, "localhost:" + mr.getJobTrackerPort());
}
}
// Don't move this code to the parent class. There's a binary
// incompatibility between hadoop 1 and 2 wrt MiniDFSCluster and we
// need to have two different shim classes even though they are
// exactly the same.
public HadoopShims.MiniDFSShim getMiniDfs(Configuration conf,
int numDataNodes,
boolean format,
String[] racks) throws IOException {
return new MiniDFSShim(new MiniDFSCluster(conf, numDataNodes, format, racks));
}
/**
* MiniDFSShim.
*
*/
public class MiniDFSShim implements HadoopShims.MiniDFSShim {
private final MiniDFSCluster cluster;
public MiniDFSShim(MiniDFSCluster cluster) {
this.cluster = cluster;
}
public FileSystem getFileSystem() throws IOException {
return cluster.getFileSystem();
}
public void shutdown() {
cluster.shutdown();
}
}
private volatile HCatHadoopShims hcatShimInstance;
@Override
public HCatHadoopShims getHCatShim() {
if(hcatShimInstance == null) {
hcatShimInstance = new HCatHadoopShims20S();
}
return hcatShimInstance;
}
private final class HCatHadoopShims20S implements HCatHadoopShims {
@Override
public TaskID createTaskID() {
return new TaskID();
}
@Override
public TaskAttemptID createTaskAttemptID() {
return new TaskAttemptID();
}
@Override
public TaskAttemptContext createTaskAttemptContext(Configuration conf, TaskAttemptID taskId) {
return new TaskAttemptContext(conf, taskId);
}
@Override
public org.apache.hadoop.mapred.TaskAttemptContext createTaskAttemptContext(org.apache.hadoop.mapred.JobConf conf,
org.apache.hadoop.mapred.TaskAttemptID taskId, Progressable progressable) {
org.apache.hadoop.mapred.TaskAttemptContext newContext = null;
try {
java.lang.reflect.Constructor construct = org.apache.hadoop.mapred.TaskAttemptContext.class.getDeclaredConstructor(
org.apache.hadoop.mapred.JobConf.class, org.apache.hadoop.mapred.TaskAttemptID.class,
Progressable.class);
construct.setAccessible(true);
newContext = (org.apache.hadoop.mapred.TaskAttemptContext)construct.newInstance(conf, taskId, progressable);
} catch (Exception e) {
throw new RuntimeException(e);
}
return newContext;
}
@Override
public JobContext createJobContext(Configuration conf,
JobID jobId) {
return new JobContext(conf, jobId);
}
@Override
public org.apache.hadoop.mapred.JobContext createJobContext(org.apache.hadoop.mapred.JobConf conf,
org.apache.hadoop.mapreduce.JobID jobId, Progressable progressable) {
org.apache.hadoop.mapred.JobContext newContext = null;
try {
java.lang.reflect.Constructor construct = org.apache.hadoop.mapred.JobContext.class.getDeclaredConstructor(
org.apache.hadoop.mapred.JobConf.class, org.apache.hadoop.mapreduce.JobID.class,
Progressable.class);
construct.setAccessible(true);
newContext = (org.apache.hadoop.mapred.JobContext)construct.newInstance(conf, jobId, progressable);
} catch (Exception e) {
throw new RuntimeException(e);
}
return newContext;
}
@Override
public void commitJob(OutputFormat outputFormat, Job job) throws IOException {
if( job.getConfiguration().get("mapred.job.tracker", "").equalsIgnoreCase("local") ) {
try {
//In local mode, mapreduce will not call OutputCommitter.cleanupJob.
//Calling it from here so that the partition publish happens.
//This call needs to be removed after MAPREDUCE-1447 is fixed.
outputFormat.getOutputCommitter(createTaskAttemptContext(
job.getConfiguration(), createTaskAttemptID())).commitJob(job);
} catch (IOException e) {
throw new IOException("Failed to cleanup job",e);
} catch (InterruptedException e) {
throw new IOException("Failed to cleanup job",e);
}
}
}
@Override
public void abortJob(OutputFormat outputFormat, Job job) throws IOException {
if (job.getConfiguration().get("mapred.job.tracker", "")
.equalsIgnoreCase("local")) {
try {
// This call needs to be removed after MAPREDUCE-1447 is fixed.
outputFormat.getOutputCommitter(createTaskAttemptContext(
job.getConfiguration(), new TaskAttemptID())).abortJob(job, JobStatus.State.FAILED);
} catch (IOException e) {
throw new IOException("Failed to abort job", e);
} catch (InterruptedException e) {
throw new IOException("Failed to abort job", e);
}
}
}
@Override
public InetSocketAddress getResourceManagerAddress(Configuration conf)
{
return JobTracker.getAddress(conf);
}
@Override
public String getPropertyName(PropertyName name) {
switch (name) {
case CACHE_ARCHIVES:
return DistributedCache.CACHE_ARCHIVES;
case CACHE_FILES:
return DistributedCache.CACHE_FILES;
case CACHE_SYMLINK:
return DistributedCache.CACHE_SYMLINK;
}
return "";
}
@Override
public boolean isFileInHDFS(FileSystem fs, Path path) throws IOException {
// In hadoop 1.x.x the file system URI is sufficient to determine the uri of the file
return "hdfs".equals(fs.getUri().getScheme());
}
}
@Override
public WebHCatJTShim getWebHCatShim(Configuration conf, UserGroupInformation ugi) throws IOException {
return new WebHCatJTShim20S(conf, ugi);//this has state, so can't be cached
}
@Override
public List<FileStatus> listLocatedStatus(final FileSystem fs,
final Path path,
final PathFilter filter
) throws IOException {
return Arrays.asList(fs.listStatus(path, filter));
}
@Override
public BlockLocation[] getLocations(FileSystem fs,
FileStatus status) throws IOException {
return fs.getFileBlockLocations(status, 0, status.getLen());
}
@Override
public void hflush(FSDataOutputStream stream) throws IOException {
stream.sync();
}
@Override
public FileSystem createProxyFileSystem(FileSystem fs, URI uri) {
return new ProxyFileSystem(fs, uri);
}
@Override
public Map<String, String> getHadoopConfNames() {
Map<String, String> ret = new HashMap<String, String>();
ret.put("HADOOPFS", "fs.default.name");
ret.put("HADOOPMAPFILENAME", "map.input.file");
ret.put("HADOOPMAPREDINPUTDIR", "mapred.input.dir");
ret.put("HADOOPMAPREDINPUTDIRRECURSIVE", "mapred.input.dir.recursive");
ret.put("MAPREDMAXSPLITSIZE", "mapred.max.split.size");
ret.put("MAPREDMINSPLITSIZE", "mapred.min.split.size");
ret.put("MAPREDMINSPLITSIZEPERNODE", "mapred.min.split.size.per.node");
ret.put("MAPREDMINSPLITSIZEPERRACK", "mapred.min.split.size.per.rack");
ret.put("HADOOPNUMREDUCERS", "mapred.reduce.tasks");
ret.put("HADOOPJOBNAME", "mapred.job.name");
ret.put("HADOOPSPECULATIVEEXECREDUCERS", "mapred.reduce.tasks.speculative.execution");
ret.put("MAPREDSETUPCLEANUPNEEDED", "mapred.committer.job.setup.cleanup.needed");
ret.put("MAPREDTASKCLEANUPNEEDED", "mapreduce.job.committer.task.cleanup.needed");
return ret;
}
@Override
public ZeroCopyReaderShim getZeroCopyReader(FSDataInputStream in, ByteBufferPoolShim pool) throws IOException {
/* not supported */
return null;
}
@Override
public DirectDecompressorShim getDirectDecompressor(DirectCompressionType codec) {
/* not supported */
return null;
}
@Override
public Configuration getConfiguration(org.apache.hadoop.mapreduce.JobContext context) {
return context.getConfiguration();
}
@Override
public FileSystem getNonCachedFileSystem(URI uri, Configuration conf) throws IOException {
boolean origDisableHDFSCache =
conf.getBoolean("fs." + uri.getScheme() + ".impl.disable.cache", false);
// hadoop-1 compatible flag.
conf.setBoolean("fs." + uri.getScheme() + ".impl.disable.cache", true);
FileSystem fs = FileSystem.get(uri, conf);
conf.setBoolean("fs." + uri.getScheme() + ".impl.disable.cache", origDisableHDFSCache);
return fs;
}
}