Package org.apache.hadoop.util.Shell

Examples of org.apache.hadoop.util.Shell.ShellCommandExecutor.execute()

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      return;
    }
    String[] args = { "kill", "-9", pid };
    ShellCommandExecutor shexec = new ShellCommandExecutor(args);
    try {
      shexec.execute();
    } catch (IOException e) {
      LOG.warn("Error sending SIGKILL to process "+ pid + " ."+
          StringUtils.stringifyException(e));
    } finally {
      LOG.info("Killing process " + pid + " with SIGKILL. Exit code "
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    }

    String[] args = { "kill", "-9", "-"+pgrpId };
    ShellCommandExecutor shexec = new ShellCommandExecutor(args);
    try {
      shexec.execute();
    } catch (IOException e) {
      LOG.warn("Error sending SIGKILL to process group "+ pgrpId + " ."+
          StringUtils.stringifyException(e));
    } finally {
      LOG.info("Killing process group" + pgrpId + " with SIGKILL. Exit code "
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  public static boolean isAlive(String pid) {
    ShellCommandExecutor shexec = null;
    try {
      String[] args = { "kill", "-0", pid };
      shexec = new ShellCommandExecutor(args);
      shexec.execute();
    } catch (ExitCodeException ee) {
      return false;
    } catch (IOException ioe) {
      LOG.warn("Error executing shell command "
          + Arrays.toString(shexec.getExecString()) + ioe);
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  public static boolean isProcessGroupAlive(String pgrpId) {
    ShellCommandExecutor shexec = null;
    try {
      String[] args = { "kill", "-0", "-"+pgrpId };
      shexec = new ShellCommandExecutor(args);
      shexec.execute();
    } catch (ExitCodeException ee) {
      return false;
    } catch (IOException ioe) {
      LOG.warn("Error executing shell command "
          + Arrays.toString(shexec.getExecString()) + ioe);
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    } else {
      untarCommand.append(FileUtil.makeShellPath(inFile));
    }
    String[] shellCmd = { "bash", "-c", untarCommand.toString() };
    ShellCommandExecutor shexec = new ShellCommandExecutor(shellCmd);
    shexec.execute();
    int exitcode = shexec.getExitCode();
    if (exitcode != 0) {
      throw new IOException("Error untarring file " + inFile +
                  ". Tar process exited with exit code " + exitcode);
    }
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    cmdBuf.append(perm).append(" ");
    cmdBuf.append(filename);
    String[] shellCmd = {"bash", "-c" ,cmdBuf.toString()};
    ShellCommandExecutor shExec = new ShellCommandExecutor(shellCmd);
    try {
      shExec.execute();
    }catch(IOException e) {
      if(Log.isDebugEnabled()) {
        Log.debug("Error while changing permission : " + filename
            +" Exception: " + StringUtils.stringifyException(e));
      }
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    // too long ago, and hence assumes no chance of pid-wrapping-around.
    ShellCommandExecutor shexec = null;
    try {
      String[] args = { "kill", "-0", pid.toString() };
      shexec = new ShellCommandExecutor(args);
      shexec.execute();
    } catch (ExitCodeException ee) {
      return false;
    } catch (IOException ioe) {
      LOG.warn("Error executing shell command "
          + Arrays.toString(shexec.getExecString()) + ioe);
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      // Kill the root process with SIGKILL if it is still alive
      if (ProcfsBasedProcessTree.this.isAlive(pid)) {
        try {
          String[] args = { "kill", "-9", pid.toString() };
          shexec = new ShellCommandExecutor(args);
          shexec.execute();
        } catch (IOException ioe) {
          LOG.warn("Error executing shell command " + ioe);
        } finally {
          LOG.info("Killing " + pid + " with SIGKILL. Exit code "
              + shexec.getExitCode());
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     * @throws IOException
     */
    public void runScript(List<String> args, File dir) throws IOException {
      ShellCommandExecutor shexec =
              new ShellCommandExecutor(args.toArray(new String[0]), dir);
      shexec.execute();
      int exitCode = shexec.getExitCode();
      if (exitCode != 0) {
        throw new IOException("Task debug script exit with nonzero status of "
                              + exitCode + ".");
      }
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    ShellCommandExecutor shexec =
        new ShellCommandExecutor(wrappedCommand.toArray(new String[0]),
                                  env.workDir, env.env);
    // set the ShellCommandExecutor for later use.
    context.shExec = shexec;
    shexec.execute();
  }
   
  /**
   * Initialize the task environment.
   *
 
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