public virtual void TestCombinerShouldUpdateTheReporter()
{
JobConf conf = new JobConf(mrCluster.GetConfig());
int numMaps = 5;
int numReds = 2;
Path @in = new Path(mrCluster.GetTestWorkDir().GetAbsolutePath(), "testCombinerShouldUpdateTheReporter-in"
);
Path @out = new Path(mrCluster.GetTestWorkDir().GetAbsolutePath(), "testCombinerShouldUpdateTheReporter-out"
);
CreateInputOutPutFolder(@in, @out, numMaps);
conf.SetJobName("test-job-with-combiner");
conf.SetMapperClass(typeof(IdentityMapper));
conf.SetCombinerClass(typeof(TestMRAppWithCombiner.MyCombinerToCheckReporter));
//conf.setJarByClass(MyCombinerToCheckReporter.class);
conf.SetReducerClass(typeof(IdentityReducer));
DistributedCache.AddFileToClassPath(TestMRJobs.AppJar, conf);
conf.SetOutputCommitter(typeof(CustomOutputCommitter));
conf.SetInputFormat(typeof(TextInputFormat));
conf.SetOutputKeyClass(typeof(LongWritable));
conf.SetOutputValueClass(typeof(Text));
FileInputFormat.SetInputPaths(conf, @in);
FileOutputFormat.SetOutputPath(conf, @out);
conf.SetNumMapTasks(numMaps);
conf.SetNumReduceTasks(numReds);
RunJob(conf);
}
// copy user specified log4j.property file in local
// to HDFS with putting on distributed cache and adding its parent directory
// to classpath.
/// <exception cref="System.IO.IOException"/>
private void CopyLog4jPropertyFile(Job job, Path submitJobDir, short replication)
{
Configuration conf = job.GetConfiguration();
string file = ValidateFilePath(conf.Get(MRJobConfig.MapreduceJobLog4jPropertiesFile
), conf);
Log.Debug("default FileSystem: " + jtFs.GetUri());
FsPermission mapredSysPerms = new FsPermission(JobSubmissionFiles.JobDirPermission
);
if (!jtFs.Exists(submitJobDir))
{
throw new IOException("Cannot find job submission directory! " + "It should just be created, so something wrong here."
);
}
Path fileDir = JobSubmissionFiles.GetJobLog4jFile(submitJobDir);
// first copy local log4j.properties file to HDFS under submitJobDir
if (file != null)
{
FileSystem.Mkdirs(jtFs, fileDir, mapredSysPerms);
URI tmpURI = null;
try
{
tmpURI = new URI(file);
}
catch (URISyntaxException e)
{
throw new ArgumentException(e);
}
Path tmp = new Path(tmpURI);
Path newPath = CopyRemoteFiles(fileDir, tmp, conf, replication);
DistributedCache.AddFileToClassPath(new Path(newPath.ToUri().GetPath()), conf);
}
}
/// <exception cref="System.IO.IOException"/>
/// <exception cref="System.Exception"/>
internal static bool RunJob(JobConf conf, Path inDir, Path outDir, int numMaps, int
numReds)
{
FileSystem fs = FileSystem.Get(conf);
if (fs.Exists(outDir))
{
fs.Delete(outDir, true);
}
if (!fs.Exists(inDir))
{
fs.Mkdirs(inDir);
}
string input = "The quick brown fox\n" + "has many silly\n" + "red fox sox\n";
for (int i = 0; i < numMaps; ++i)
{
DataOutputStream file = fs.Create(new Path(inDir, "part-" + i));
file.WriteBytes(input);
file.Close();
}
DistributedCache.AddFileToClassPath(TestMRJobs.AppJar, conf, fs);
conf.SetOutputCommitter(typeof(CustomOutputCommitter));
conf.SetInputFormat(typeof(TextInputFormat));
conf.SetOutputKeyClass(typeof(LongWritable));
conf.SetOutputValueClass(typeof(Text));
FileInputFormat.SetInputPaths(conf, inDir);
FileOutputFormat.SetOutputPath(conf, outDir);
conf.SetNumMapTasks(numMaps);
conf.SetNumReduceTasks(numReds);
JobClient jobClient = new JobClient(conf);
RunningJob job = jobClient.SubmitJob(conf);
return(jobClient.MonitorAndPrintJob(conf, job));
}
/// <summary>
/// Upload and configure files, libjars, jobjars, and archives pertaining to
/// the passed job.
/// </summary>
/// <param name="job">the job containing the files to be uploaded</param>
/// <param name="submitJobDir">the submission directory of the job</param>
/// <exception cref="System.IO.IOException"/>
public virtual void UploadFiles(Job job, Path submitJobDir)
{
Configuration conf = job.GetConfiguration();
short replication = (short)conf.GetInt(Job.SubmitReplication, Job.DefaultSubmitReplication
);
if (!(conf.GetBoolean(Job.UsedGenericParser, false)))
{
Log.Warn("Hadoop command-line option parsing not performed. " + "Implement the Tool interface and execute your application "
+ "with ToolRunner to remedy this.");
}
// get all the command line arguments passed in by the user conf
string files = conf.Get("tmpfiles");
string libjars = conf.Get("tmpjars");
string archives = conf.Get("tmparchives");
string jobJar = job.GetJar();
//
// Figure out what fs the JobTracker is using. Copy the
// job to it, under a temporary name. This allows DFS to work,
// and under the local fs also provides UNIX-like object loading
// semantics. (that is, if the job file is deleted right after
// submission, we can still run the submission to completion)
//
// Create a number of filenames in the JobTracker's fs namespace
Log.Debug("default FileSystem: " + jtFs.GetUri());
if (jtFs.Exists(submitJobDir))
{
throw new IOException("Not submitting job. Job directory " + submitJobDir + " already exists!! This is unexpected.Please check what's there in"
+ " that directory");
}
submitJobDir = jtFs.MakeQualified(submitJobDir);
submitJobDir = new Path(submitJobDir.ToUri().GetPath());
FsPermission mapredSysPerms = new FsPermission(JobSubmissionFiles.JobDirPermission
);
FileSystem.Mkdirs(jtFs, submitJobDir, mapredSysPerms);
Path filesDir = JobSubmissionFiles.GetJobDistCacheFiles(submitJobDir);
Path archivesDir = JobSubmissionFiles.GetJobDistCacheArchives(submitJobDir);
Path libjarsDir = JobSubmissionFiles.GetJobDistCacheLibjars(submitJobDir);
// add all the command line files/ jars and archive
// first copy them to jobtrackers filesystem
if (files != null)
{
FileSystem.Mkdirs(jtFs, filesDir, mapredSysPerms);
string[] fileArr = files.Split(",");
foreach (string tmpFile in fileArr)
{
URI tmpURI = null;
try
{
tmpURI = new URI(tmpFile);
}
catch (URISyntaxException e)
{
throw new ArgumentException(e);
}
Path tmp = new Path(tmpURI);
Path newPath = CopyRemoteFiles(filesDir, tmp, conf, replication);
try
{
URI pathURI = GetPathURI(newPath, tmpURI.GetFragment());
DistributedCache.AddCacheFile(pathURI, conf);
}
catch (URISyntaxException ue)
{
// should not throw a uri exception
throw new IOException("Failed to create uri for " + tmpFile, ue);
}
}
}
if (libjars != null)
{
FileSystem.Mkdirs(jtFs, libjarsDir, mapredSysPerms);
string[] libjarsArr = libjars.Split(",");
foreach (string tmpjars in libjarsArr)
{
Path tmp = new Path(tmpjars);
Path newPath = CopyRemoteFiles(libjarsDir, tmp, conf, replication);
DistributedCache.AddFileToClassPath(new Path(newPath.ToUri().GetPath()), conf, jtFs
);
}
}
if (archives != null)
{
FileSystem.Mkdirs(jtFs, archivesDir, mapredSysPerms);
string[] archivesArr = archives.Split(",");
foreach (string tmpArchives in archivesArr)
{
URI tmpURI;
try
{
tmpURI = new URI(tmpArchives);
}
catch (URISyntaxException e)
{
throw new ArgumentException(e);
}
Path tmp = new Path(tmpURI);
Path newPath = CopyRemoteFiles(archivesDir, tmp, conf, replication);
try
{
URI pathURI = GetPathURI(newPath, tmpURI.GetFragment());
DistributedCache.AddCacheArchive(pathURI, conf);
}
catch (URISyntaxException ue)
{
// should not throw an uri excpetion
throw new IOException("Failed to create uri for " + tmpArchives, ue);
}
}
}
if (jobJar != null)
{
// copy jar to JobTracker's fs
// use jar name if job is not named.
if (string.Empty.Equals(job.GetJobName()))
{
job.SetJobName(new Path(jobJar).GetName());
}
Path jobJarPath = new Path(jobJar);
URI jobJarURI = jobJarPath.ToUri();
// If the job jar is already in a global fs,
// we don't need to copy it from local fs
if (jobJarURI.GetScheme() == null || jobJarURI.GetScheme().Equals("file"))
{
CopyJar(jobJarPath, JobSubmissionFiles.GetJobJar(submitJobDir), replication);
job.SetJar(JobSubmissionFiles.GetJobJar(submitJobDir).ToString());
}
}
else
{
Log.Warn("No job jar file set. User classes may not be found. " + "See Job or Job#setJar(String)."
);
}
AddLog4jToDistributedCache(job, submitJobDir);
// set the timestamps of the archives and files
// set the public/private visibility of the archives and files
ClientDistributedCacheManager.DetermineTimestampsAndCacheVisibilities(conf);
// get DelegationToken for cached file
ClientDistributedCacheManager.GetDelegationTokens(conf, job.GetCredentials());
}
