org.apache.hadoop.mapred.FileAlreadyExistsException#org.apache.hadoop.mapred.InvalidJobConfException源码实例Demo

下面列出了org.apache.hadoop.mapred.FileAlreadyExistsException#org.apache.hadoop.mapred.InvalidJobConfException 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： hadoop 文件： FileOutputFormat.java

public void checkOutputSpecs(JobContext job
                             ) throws FileAlreadyExistsException, IOException{
  // Ensure that the output directory is set and not already there
  Path outDir = getOutputPath(job);
  if (outDir == null) {
    throw new InvalidJobConfException("Output directory not set.");
  }

  // get delegation token for outDir's file system
  TokenCache.obtainTokensForNamenodes(job.getCredentials(),
      new Path[] { outDir }, job.getConfiguration());

  if (outDir.getFileSystem(job.getConfiguration()).exists(outDir)) {
    throw new FileAlreadyExistsException("Output directory " + outDir + 
                                         " already exists");
  }
}

源代码2 项目： big-c 文件： FileOutputFormat.java

public void checkOutputSpecs(JobContext job
                             ) throws FileAlreadyExistsException, IOException{
  // Ensure that the output directory is set and not already there
  Path outDir = getOutputPath(job);
  if (outDir == null) {
    throw new InvalidJobConfException("Output directory not set.");
  }

  // get delegation token for outDir's file system
  TokenCache.obtainTokensForNamenodes(job.getCredentials(),
      new Path[] { outDir }, job.getConfiguration());

  if (outDir.getFileSystem(job.getConfiguration()).exists(outDir)) {
    throw new FileAlreadyExistsException("Output directory " + outDir + 
                                         " already exists");
  }
}

源代码3 项目： spliceengine 文件： NativeSparkDataSet.java

/**
 * Overridden to avoid throwing an exception if the specified directory
 * for export already exists.
 */
@Override
public void checkOutputSpecs(JobContext job) throws FileAlreadyExistsException, IOException {
    Path outDir = getOutputPath(job);
    if(outDir == null) {
        throw new InvalidJobConfException("Output directory not set.");
    } else {
        TokenCache.obtainTokensForNamenodes(job.getCredentials(), new Path[]{outDir}, job.getConfiguration());
        /*
        if(outDir.getFileSystem(job.getConfiguration()).exists(outDir)) {
            System.out.println("Output dir already exists, no problem");
            throw new FileAlreadyExistsException("Output directory " + outDir + " already exists");
        }
        */
    }
}

源代码4 项目： spliceengine 文件： SparkDataSet.java

/**
 * Overridden to avoid throwing an exception if the specified directory
 * for export already exists.
 */
@Override
public void checkOutputSpecs(JobContext job) throws FileAlreadyExistsException, IOException {
    Path outDir = getOutputPath(job);
    if(outDir == null) {
        throw new InvalidJobConfException("Output directory not set.");
    } else {
        TokenCache.obtainTokensForNamenodes(job.getCredentials(), new Path[]{outDir}, job.getConfiguration());
        /*
        if(outDir.getFileSystem(job.getConfiguration()).exists(outDir)) {
            System.out.println("Output dir already exists, no problem");
            throw new FileAlreadyExistsException("Output directory " + outDir + " already exists");
        }
        */
    }
}

源代码5 项目： zephyr 文件： ZephyrOutputFormat.java

@Override
public void checkOutputSpecs(FileSystem ignored, JobConf job) throws FileAlreadyExistsException, InvalidJobConfException, IOException {
    // Ensure that the output directory is set and not already there
    Path outDir = getOutputPath(job);
    if (outDir == null && job.getNumReduceTasks() != 0) {
        throw new InvalidJobConfException("Output directory not set in JobConf.");
    }
    if (outDir != null) {
        FileSystem fs = outDir.getFileSystem(job);
        // normalize the output directory
        outDir = fs.makeQualified(outDir);
        setOutputPath(job, outDir);

        // get delegation token for the outDir's file system
        TokenCache.obtainTokensForNamenodes(job.getCredentials(), new Path[]{outDir}, job);
        String jobUuid = job.get("zephyr.job.uuid");
        if (jobUuid == null)
            throw new InvalidJobConfException("This output format REQUIRES the value zephyr.job.uuid to be specified in the job configuration!");
        // // check its existence
        // if (fs.exists(outDir)) {
        // throw new FileAlreadyExistsException("Output directory " + outDir
        // + " already exists");
        // }
    }
}

源代码6 项目： hadoop 文件： SequenceFileAsBinaryOutputFormat.java

@Override 
public void checkOutputSpecs(JobContext job) throws IOException {
  super.checkOutputSpecs(job);
  if (getCompressOutput(job) && 
      getOutputCompressionType(job) == CompressionType.RECORD ) {
    throw new InvalidJobConfException("SequenceFileAsBinaryOutputFormat "
      + "doesn't support Record Compression" );
  }
}

源代码7 项目： hadoop 文件： TeraOutputFormat.java

@Override
public void checkOutputSpecs(JobContext job
                            ) throws InvalidJobConfException, IOException {
  // Ensure that the output directory is set
  Path outDir = getOutputPath(job);
  if (outDir == null) {
    throw new InvalidJobConfException("Output directory not set in JobConf.");
  }

  final Configuration jobConf = job.getConfiguration();

  // get delegation token for outDir's file system
  TokenCache.obtainTokensForNamenodes(job.getCredentials(),
      new Path[] { outDir }, jobConf);

  final FileSystem fs = outDir.getFileSystem(jobConf);

  if (fs.exists(outDir)) {
    // existing output dir is considered empty iff its only content is the
    // partition file.
    //
    final FileStatus[] outDirKids = fs.listStatus(outDir);
    boolean empty = false;
    if (outDirKids != null && outDirKids.length == 1) {
      final FileStatus st = outDirKids[0];
      final String fname = st.getPath().getName();
      empty =
        !st.isDirectory() && TeraInputFormat.PARTITION_FILENAME.equals(fname);
    }
    if (TeraSort.getUseSimplePartitioner(job) || !empty) {
      throw new FileAlreadyExistsException("Output directory " + outDir
          + " already exists");
    }
  }
}

源代码8 项目： pravega-samples 文件： TeraOutputFormat.java

@Override
public void checkOutputSpecs(JobContext job
                            ) throws InvalidJobConfException, IOException {
  // Ensure that the output directory is set
  Path outDir = getOutputPath(job);
  if (outDir == null) {
    throw new InvalidJobConfException("Output directory not set in JobConf.");
  }

  final Configuration jobConf = job.getConfiguration();

  // get delegation token for outDir's file system
  TokenCache.obtainTokensForNamenodes(job.getCredentials(),
      new Path[] { outDir }, jobConf);

  final FileSystem fs = outDir.getFileSystem(jobConf);

  try {
    // existing output dir is considered empty iff its only content is the
    // partition file.
    //
    final FileStatus[] outDirKids = fs.listStatus(outDir);
    boolean empty = false;
    if (outDirKids != null && outDirKids.length == 1) {
      final FileStatus st = outDirKids[0];
      final String fname = st.getPath().getName();
      empty =
        !st.isDirectory() && TeraInputFormat.PARTITION_FILENAME.equals(fname);
    }
    if (TeraSort.getUseSimplePartitioner(job) || !empty) {
      throw new FileAlreadyExistsException("Output directory " + outDir
          + " already exists");
    }
  } catch (FileNotFoundException ignored) {
  }
}

源代码9 项目： gemfirexd-oss 文件： RowOutputFormat.java

public MapRedGfxdRecordWriter(Configuration conf) throws IOException {
  this.tableName = conf.get(OUTPUT_TABLE);
  try {
    this.batchExecutor = util.new RowCommandBatchExecutor(getDriver(conf),
        conf.get(OUTPUT_URL), conf.getInt(OUTPUT_BATCH_SIZE,
            OUTPUT_BATCH_SIZE_DEFAULT));
  } catch (ClassNotFoundException e) {
    logger.error("Gemfirexd client classes are missing from the classpath", e);
    throw new InvalidJobConfException(e);
  }
}

源代码10 项目： gemfirexd-oss 文件： RowOutputFormat.java

/**
 * Validates correctness and completeness of job's output configuration. Job
 * configuration must contain url, table and schema name
 * 
 * @param conf
 *          job conf
 * @throws InvalidJobConfException
 */
protected static void validateConfiguration(Configuration conf)
    throws InvalidJobConfException {
  // User must configure the output region name.
  String url = conf.get(OUTPUT_URL);
  if (url == null || url.trim().isEmpty()) {
    throw new InvalidJobConfException("Output URL not configured.");
  }

  String table = conf.get(OUTPUT_TABLE);
  if (table == null || table.trim().isEmpty()) {
    throw new InvalidJobConfException("Output table name not provided.");
  }
}

源代码11 项目： gemfirexd-oss 文件： RowOutputFormat.java

public GfxdRecordWriter(Configuration conf) throws IOException {
  this.tableName = conf.get(OUTPUT_TABLE);
  try {
    this.batchExecutor = util.new RowCommandBatchExecutor(getDriver(conf),
        conf.get(OUTPUT_URL), conf.getInt(OUTPUT_BATCH_SIZE,
            OUTPUT_BATCH_SIZE_DEFAULT));
  } catch (ClassNotFoundException e) {
    logger.error("Gemfirexd client classes are missing from the classpath", e);
    throw new InvalidJobConfException(e);
  }
}

源代码12 项目： gemfirexd-oss 文件： GFOutputFormat.java

/**
 * Validates correctness and completeness of job's output configuration
 * 
 * @param conf
 * @throws InvalidJobConfException
 */
protected void validateConfiguration(Configuration conf)
    throws InvalidJobConfException {
  // User must configure the output region name.
  String region = conf.get(REGION);
  if (region == null || region.trim().isEmpty()) {
    throw new InvalidJobConfException("Output Region name not provided.");
  }

  // TODO validate if a client connected to gemfire cluster can be created
}

源代码13 项目： big-c 文件： SequenceFileAsBinaryOutputFormat.java

@Override 
public void checkOutputSpecs(JobContext job) throws IOException {
  super.checkOutputSpecs(job);
  if (getCompressOutput(job) && 
      getOutputCompressionType(job) == CompressionType.RECORD ) {
    throw new InvalidJobConfException("SequenceFileAsBinaryOutputFormat "
      + "doesn't support Record Compression" );
  }
}

源代码14 项目： big-c 文件： TeraOutputFormat.java

@Override
public void checkOutputSpecs(JobContext job
                            ) throws InvalidJobConfException, IOException {
  // Ensure that the output directory is set
  Path outDir = getOutputPath(job);
  if (outDir == null) {
    throw new InvalidJobConfException("Output directory not set in JobConf.");
  }

  final Configuration jobConf = job.getConfiguration();

  // get delegation token for outDir's file system
  TokenCache.obtainTokensForNamenodes(job.getCredentials(),
      new Path[] { outDir }, jobConf);

  final FileSystem fs = outDir.getFileSystem(jobConf);

  if (fs.exists(outDir)) {
    // existing output dir is considered empty iff its only content is the
    // partition file.
    //
    final FileStatus[] outDirKids = fs.listStatus(outDir);
    boolean empty = false;
    if (outDirKids != null && outDirKids.length == 1) {
      final FileStatus st = outDirKids[0];
      final String fname = st.getPath().getName();
      empty =
        !st.isDirectory() && TeraInputFormat.PARTITION_FILENAME.equals(fname);
    }
    if (TeraSort.getUseSimplePartitioner(job) || !empty) {
      throw new FileAlreadyExistsException("Output directory " + outDir
          + " already exists");
    }
  }
}

源代码15 项目： gemfirexd-oss 文件： RowOutputFormat.java

public MapRedGfxdRecordWriter(Configuration conf) throws IOException {
  this.tableName = conf.get(OUTPUT_TABLE);
  try {
    this.batchExecutor = util.new RowCommandBatchExecutor(getDriver(conf),
        conf.get(OUTPUT_URL), conf.getInt(OUTPUT_BATCH_SIZE,
            OUTPUT_BATCH_SIZE_DEFAULT));
  } catch (ClassNotFoundException e) {
    logger.error("Gemfirexd client classes are missing from the classpath", e);
    throw new InvalidJobConfException(e);
  }
}

源代码16 项目： gemfirexd-oss 文件： RowOutputFormat.java

/**
 * Validates correctness and completeness of job's output configuration. Job
 * configuration must contain url, table and schema name
 * 
 * @param conf
 *          job conf
 * @throws InvalidJobConfException
 */
protected static void validateConfiguration(Configuration conf)
    throws InvalidJobConfException {
  // User must configure the output region name.
  String url = conf.get(OUTPUT_URL);
  if (url == null || url.trim().isEmpty()) {
    throw new InvalidJobConfException("Output URL not configured.");
  }

  String table = conf.get(OUTPUT_TABLE);
  if (table == null || table.trim().isEmpty()) {
    throw new InvalidJobConfException("Output table name not provided.");
  }
}

源代码17 项目： gemfirexd-oss 文件： RowOutputFormat.java

public GfxdRecordWriter(Configuration conf) throws IOException {
  this.tableName = conf.get(OUTPUT_TABLE);
  try {
    this.batchExecutor = util.new RowCommandBatchExecutor(getDriver(conf),
        conf.get(OUTPUT_URL), conf.getInt(OUTPUT_BATCH_SIZE,
            OUTPUT_BATCH_SIZE_DEFAULT));
  } catch (ClassNotFoundException e) {
    logger.error("Gemfirexd client classes are missing from the classpath", e);
    throw new InvalidJobConfException(e);
  }
}

源代码18 项目： gemfirexd-oss 文件： GFOutputFormat.java

/**
 * Validates correctness and completeness of job's output configuration
 * 
 * @param conf
 * @throws InvalidJobConfException
 */
protected void validateConfiguration(Configuration conf)
    throws InvalidJobConfException {
  // User must configure the output region name.
  String region = conf.get(REGION);
  if (region == null || region.trim().isEmpty()) {
    throw new InvalidJobConfException("Output Region name not provided.");
  }

  // TODO validate if a client connected to gemfire cluster can be created
}

源代码19 项目： anthelion 文件： FetcherOutputFormat.java

public void checkOutputSpecs(FileSystem fs, JobConf job) throws IOException {
  Path out = FileOutputFormat.getOutputPath(job);
  if ((out == null) && (job.getNumReduceTasks() != 0)) {
  	throw new InvalidJobConfException(
  			"Output directory not set in JobConf.");
  }
  if (fs == null) {
  	fs = out.getFileSystem(job);
  }
  if (fs.exists(new Path(out, CrawlDatum.FETCH_DIR_NAME)))
  	throw new IOException("Segment already fetched!");
}

源代码20 项目： hbase 文件： TableOutputFormat.java

@Override
public void checkOutputSpecs(FileSystem ignored, JobConf job)
throws FileAlreadyExistsException, InvalidJobConfException, IOException {
  String tableName = job.get(OUTPUT_TABLE);
  if (tableName == null) {
    throw new IOException("Must specify table name");
  }
}

源代码21 项目： RDFS 文件： FileOutputFormat.java

public void checkOutputSpecs(JobContext job
                             ) throws FileAlreadyExistsException, IOException{
  // Ensure that the output directory is set and not already there
  Path outDir = getOutputPath(job);
  if (outDir == null) {
    throw new InvalidJobConfException("Output directory not set.");
  }
  if (outDir.getFileSystem(job.getConfiguration()).exists(outDir)) {
    throw new FileAlreadyExistsException("Output directory " + outDir + 
                                         " already exists");
  }
}

源代码22 项目： nutch-htmlunit 文件： FetcherOutputFormat.java

public void checkOutputSpecs(FileSystem fs, JobConf job) throws IOException {
  Path out = FileOutputFormat.getOutputPath(job);
  if ((out == null) && (job.getNumReduceTasks() != 0)) {
  	throw new InvalidJobConfException(
  			"Output directory not set in JobConf.");
  }
  if (fs == null) {
  	fs = out.getFileSystem(job);
  }
  if (fs.exists(new Path(out, CrawlDatum.FETCH_DIR_NAME)))
  	throw new IOException("Segment already fetched!");
}

源代码23 项目： incubator-tez 文件： TeraOutputFormat.java

@Override
public void checkOutputSpecs(JobContext job
                            ) throws InvalidJobConfException, IOException {
  // Ensure that the output directory is set
  Path outDir = getOutputPath(job);
  if (outDir == null) {
    throw new InvalidJobConfException("Output directory not set in JobConf.");
  }

  // get delegation token for outDir's file system
  TokenCache.obtainTokensForNamenodes(job.getCredentials(),
      new Path[] { outDir }, job.getConfiguration());
}

源代码24 项目： hadoop-gpu 文件： FileOutputFormat.java

public void checkOutputSpecs(JobContext job
                             ) throws FileAlreadyExistsException, IOException{
  // Ensure that the output directory is set and not already there
  Path outDir = getOutputPath(job);
  if (outDir == null) {
    throw new InvalidJobConfException("Output directory not set.");
  }
  if (outDir.getFileSystem(job.getConfiguration()).exists(outDir)) {
    throw new FileAlreadyExistsException("Output directory " + outDir + 
                                         " already exists");
  }
}

源代码25 项目： hadoop 文件： StreamJob.java

public int submitAndMonitorJob() throws IOException {

    if (jar_ != null && isLocalHadoop()) {
      // getAbs became required when shell and subvm have different working dirs...
      File wd = new File(".").getAbsoluteFile();
      RunJar.unJar(new File(jar_), wd);
    }

    // if jobConf_ changes must recreate a JobClient
    jc_ = new JobClient(jobConf_);
    running_ = null;
    try {
      running_ = jc_.submitJob(jobConf_);
      jobId_ = running_.getID();
      if (background_) {
        LOG.info("Job is running in background.");
      } else if (!jc_.monitorAndPrintJob(jobConf_, running_)) {
        LOG.error("Job not successful!");
        return 1;
      }
      LOG.info("Output directory: " + output_);
    } catch(FileNotFoundException fe) {
      LOG.error("Error launching job , bad input path : " + fe.getMessage());
      return 2;
    } catch(InvalidJobConfException je) {
      LOG.error("Error launching job , Invalid job conf : " + je.getMessage());
      return 3;
    } catch(FileAlreadyExistsException fae) {
      LOG.error("Error launching job , Output path already exists : "
                + fae.getMessage());
      return 4;
    } catch(IOException ioe) {
      LOG.error("Error Launching job : " + ioe.getMessage());
      return 5;
    } catch (InterruptedException ie) {
      LOG.error("Error monitoring job : " + ie.getMessage());
      return 6;
    } finally {
      jc_.close();
    }
    return 0;
  }

源代码26 项目： big-c 文件： StreamJob.java

public int submitAndMonitorJob() throws IOException {

    if (jar_ != null && isLocalHadoop()) {
      // getAbs became required when shell and subvm have different working dirs...
      File wd = new File(".").getAbsoluteFile();
      RunJar.unJar(new File(jar_), wd);
    }

    // if jobConf_ changes must recreate a JobClient
    jc_ = new JobClient(jobConf_);
    running_ = null;
    try {
      running_ = jc_.submitJob(jobConf_);
      jobId_ = running_.getID();
      if (background_) {
        LOG.info("Job is running in background.");
      } else if (!jc_.monitorAndPrintJob(jobConf_, running_)) {
        LOG.error("Job not successful!");
        return 1;
      }
      LOG.info("Output directory: " + output_);
    } catch(FileNotFoundException fe) {
      LOG.error("Error launching job , bad input path : " + fe.getMessage());
      return 2;
    } catch(InvalidJobConfException je) {
      LOG.error("Error launching job , Invalid job conf : " + je.getMessage());
      return 3;
    } catch(FileAlreadyExistsException fae) {
      LOG.error("Error launching job , Output path already exists : "
                + fae.getMessage());
      return 4;
    } catch(IOException ioe) {
      LOG.error("Error Launching job : " + ioe.getMessage());
      return 5;
    } catch (InterruptedException ie) {
      LOG.error("Error monitoring job : " + ie.getMessage());
      return 6;
    } finally {
      jc_.close();
    }
    return 0;
  }

源代码27 项目： RDFS 文件： StreamJob.java

public int submitAndMonitorJob() throws IOException {

    if (jar_ != null && isLocalHadoop()) {
      // getAbs became required when shell and subvm have different working dirs...
      File wd = new File(".").getAbsoluteFile();
      StreamUtil.unJar(new File(jar_), wd);
    }

    // if jobConf_ changes must recreate a JobClient
    jc_ = new JobClient(jobConf_);
    boolean error = true;
    running_ = null;
    String lastReport = null;
    try {
      running_ = jc_.submitJob(jobConf_);
      jobId_ = running_.getJobID();

      LOG.info("getLocalDirs(): " + Arrays.asList(jobConf_.getLocalDirs()));
      LOG.info("Running job: " + jobId_);
      jobInfo();

      while (!running_.isComplete()) {
        try {
          Thread.sleep(1000);
        } catch (InterruptedException e) {
        }
        running_ = jc_.getJob(jobId_);
        String report = null;
        report = " map " + Math.round(running_.mapProgress() * 100) + "%  reduce "
          + Math.round(running_.reduceProgress() * 100) + "%";

        if (!report.equals(lastReport)) {
          LOG.info(report);
          lastReport = report;
        }
      }
      if (!running_.isSuccessful()) {
        jobInfo();
	LOG.error("Job not Successful!");
	return 1;
      }
      LOG.info("Job complete: " + jobId_);
      LOG.info("Output: " + output_);
      error = false;
    } catch(FileNotFoundException fe) {
      LOG.error("Error launching job , bad input path : " + fe.getMessage());
      return 2;
    } catch(InvalidJobConfException je) {
      LOG.error("Error launching job , Invalid job conf : " + je.getMessage());
      return 3;
    } catch(FileAlreadyExistsException fae) {
      LOG.error("Error launching job , Output path already exists : "
                + fae.getMessage());
      return 4;
    } catch(IOException ioe) {
      LOG.error("Error Launching job : " + ioe.getMessage());
      return 5;
    } finally {
      if (error && (running_ != null)) {
        LOG.info("killJob...");
        running_.killJob();
      }
      jc_.close();
    }
    return 0;
  }

源代码28 项目： RDFS 文件： StreamJob.java

public int submitAndMonitorJob() throws IOException {

    if (jar_ != null && isLocalHadoop()) {
      // getAbs became required when shell and subvm have different working dirs...
      File wd = new File(".").getAbsoluteFile();
      StreamUtil.unJar(new File(jar_), wd);
    }

    // if jobConf_ changes must recreate a JobClient
    jc_ = new JobClient(jobConf_);
    boolean error = true;
    running_ = null;
    String lastReport = null;
    try {
      running_ = jc_.submitJob(jobConf_);
      jobId_ = running_.getID();

      LOG.info("getLocalDirs(): " + Arrays.asList(jobConf_.getLocalDirs()));
      LOG.info("Running job: " + jobId_);
      jobInfo();

      while (!running_.isComplete()) {
        try {
          Thread.sleep(1000);
        } catch (InterruptedException e) {
        }
        running_ = jc_.getJob(jobId_);
        String report = null;
        report = " map " + Math.round(running_.mapProgress() * 100) + "%  reduce "
          + Math.round(running_.reduceProgress() * 100) + "%";

        if (!report.equals(lastReport)) {
          LOG.info(report);
          lastReport = report;
        }
      }
      if (!running_.isSuccessful()) {
        jobInfo();
	LOG.error("Job not Successful!");
	return 1;
      }
      LOG.info("Job complete: " + jobId_);
      LOG.info("Output: " + output_);
      error = false;
    } catch(FileNotFoundException fe) {
      LOG.error("Error launching job , bad input path : " + fe.getMessage());
      return 2;
    } catch(InvalidJobConfException je) {
      LOG.error("Error launching job , Invalid job conf : " + je.getMessage());
      return 3;
    } catch(FileAlreadyExistsException fae) {
      LOG.error("Error launching job , Output path already exists : " 
                + fae.getMessage());
      return 4;
    } catch(IOException ioe) {
      LOG.error("Error Launching job : " + ioe.getMessage());
      return 5;
    } finally {
      if (error && (running_ != null)) {
        LOG.info("killJob...");
        running_.killJob();
      }
      jc_.close();
    }
    return 0;
  }

源代码29 项目： webarchive-commons 文件： PerMapOutputFormat.java

/**
 * Over-ride the default FileOutputFormat's checkOutputSpecs() to
 * allow for the target directory to already exist.
 */
public void checkOutputSpecs( FileSystem ignored, JobConf job )
  throws FileAlreadyExistsException, InvalidJobConfException, IOException 
{
}

源代码30 项目： hadoop-gpu 文件： StreamJob.java

public int submitAndMonitorJob() throws IOException {

    if (jar_ != null && isLocalHadoop()) {
      // getAbs became required when shell and subvm have different working dirs...
      File wd = new File(".").getAbsoluteFile();
      StreamUtil.unJar(new File(jar_), wd);
    }

    // if jobConf_ changes must recreate a JobClient
    jc_ = new JobClient(jobConf_);
    boolean error = true;
    running_ = null;
    String lastReport = null;
    try {
      running_ = jc_.submitJob(jobConf_);
      jobId_ = running_.getID();

      LOG.info("getLocalDirs(): " + Arrays.asList(jobConf_.getLocalDirs()));
      LOG.info("Running job: " + jobId_);
      jobInfo();

      while (!running_.isComplete()) {
        try {
          Thread.sleep(1000);
        } catch (InterruptedException e) {
        }
        running_ = jc_.getJob(jobId_);
        String report = null;
        report = " map " + Math.round(running_.mapProgress() * 100) + "%  reduce "
          + Math.round(running_.reduceProgress() * 100) + "%";

        if (!report.equals(lastReport)) {
          LOG.info(report);
          lastReport = report;
        }
      }
      if (!running_.isSuccessful()) {
        jobInfo();
	LOG.error("Job not Successful!");
	return 1;
      }
      LOG.info("Job complete: " + jobId_);
      LOG.info("Output: " + output_);
      error = false;
    } catch(FileNotFoundException fe) {
      LOG.error("Error launching job , bad input path : " + fe.getMessage());
      return 2;
    } catch(InvalidJobConfException je) {
      LOG.error("Error launching job , Invalid job conf : " + je.getMessage());
      return 3;
    } catch(FileAlreadyExistsException fae) {
      LOG.error("Error launching job , Output path already exists : " 
                + fae.getMessage());
      return 4;
    } catch(IOException ioe) {
      LOG.error("Error Launching job : " + ioe.getMessage());
      return 5;
    } finally {
      if (error && (running_ != null)) {
        LOG.info("killJob...");
        running_.killJob();
      }
      jc_.close();
    }
    return 0;
  }

方法所在类

org.apache.hadoop.mapred.FileAlreadyExistsException