Esempio n. 1
0
  @Override
  public int execute(DriverContext driverContext) {

    Context ctx = driverContext.getCtx();
    boolean ctxCreated = false;

    try {
      if (ctx == null) {
        ctx = new Context(conf);
        ctxCreated = true;
      }

      // estimate number of reducers
      setNumberOfReducers();

      // auto-determine local mode if allowed
      if (!ctx.isLocalOnlyExecutionMode() && conf.getBoolVar(HiveConf.ConfVars.LOCALMODEAUTO)) {

        if (inputSummary == null) {
          inputSummary = Utilities.getInputSummary(driverContext.getCtx(), work, null);
        }

        // set the values of totalInputFileSize and totalInputNumFiles, estimating them
        // if percentage block sampling is being used
        estimateInputSize();

        // at this point the number of reducers is precisely defined in the plan
        int numReducers = work.getNumReduceTasks();

        if (LOG.isDebugEnabled()) {
          LOG.debug(
              "Task: "
                  + getId()
                  + ", Summary: "
                  + totalInputFileSize
                  + ","
                  + totalInputNumFiles
                  + ","
                  + numReducers);
        }

        String reason =
            MapRedTask.isEligibleForLocalMode(
                conf, numReducers, totalInputFileSize, totalInputNumFiles);
        if (reason == null) {
          // clone configuration before modifying it on per-task basis
          cloneConf();
          conf.setVar(HiveConf.ConfVars.HADOOPJT, "local");
          console.printInfo("Selecting local mode for task: " + getId());
          this.setLocalMode(true);
        } else {
          console.printInfo("Cannot run job locally: " + reason);
          this.setLocalMode(false);
        }
      }

      runningViaChild =
          "local".equals(conf.getVar(HiveConf.ConfVars.HADOOPJT))
              || conf.getBoolVar(HiveConf.ConfVars.SUBMITVIACHILD);

      if (!runningViaChild) {
        // we are not running this mapred task via child jvm
        // so directly invoke ExecDriver
        return super.execute(driverContext);
      }

      // we need to edit the configuration to setup cmdline. clone it first
      cloneConf();

      // propagate input format if necessary
      super.setInputAttributes(conf);

      // enable assertion
      String hadoopExec = conf.getVar(HiveConf.ConfVars.HADOOPBIN);
      String hiveJar = conf.getJar();

      String libJarsOption;
      String addedJars = Utilities.getResourceFiles(conf, SessionState.ResourceType.JAR);
      conf.setVar(ConfVars.HIVEADDEDJARS, addedJars);
      String auxJars = conf.getAuxJars();
      // Put auxjars and addedjars together into libjars
      if (StringUtils.isEmpty(addedJars)) {
        if (StringUtils.isEmpty(auxJars)) {
          libJarsOption = " ";
        } else {
          libJarsOption = " -libjars " + auxJars + " ";
        }
      } else {
        if (StringUtils.isEmpty(auxJars)) {
          libJarsOption = " -libjars " + addedJars + " ";
        } else {
          libJarsOption = " -libjars " + addedJars + "," + auxJars + " ";
        }
      }
      // Generate the hiveConfArgs after potentially adding the jars
      String hiveConfArgs = generateCmdLine(conf);

      // write out the plan to a local file
      Path planPath = new Path(ctx.getLocalTmpFileURI(), "plan.xml");
      OutputStream out = FileSystem.getLocal(conf).create(planPath);
      MapredWork plan = getWork();
      LOG.info("Generating plan file " + planPath.toString());
      Utilities.serializeMapRedWork(plan, out);

      String isSilent = "true".equalsIgnoreCase(System.getProperty("test.silent")) ? "-nolog" : "";

      String jarCmd;
      if (ShimLoader.getHadoopShims().usesJobShell()) {
        jarCmd = libJarsOption + hiveJar + " " + ExecDriver.class.getName();
      } else {
        jarCmd = hiveJar + " " + ExecDriver.class.getName() + libJarsOption;
      }

      String cmdLine =
          hadoopExec
              + " jar "
              + jarCmd
              + " -plan "
              + planPath.toString()
              + " "
              + isSilent
              + " "
              + hiveConfArgs;

      String workDir = (new File(".")).getCanonicalPath();
      String files = Utilities.getResourceFiles(conf, SessionState.ResourceType.FILE);
      if (!files.isEmpty()) {
        cmdLine = cmdLine + " -files " + files;

        workDir = (new Path(ctx.getLocalTmpFileURI())).toUri().getPath();

        if (!(new File(workDir)).mkdir()) {
          throw new IOException("Cannot create tmp working dir: " + workDir);
        }

        for (String f : StringUtils.split(files, ',')) {
          Path p = new Path(f);
          String target = p.toUri().getPath();
          String link = workDir + Path.SEPARATOR + p.getName();
          if (FileUtil.symLink(target, link) != 0) {
            throw new IOException("Cannot link to added file: " + target + " from: " + link);
          }
        }
      }

      LOG.info("Executing: " + cmdLine);
      Process executor = null;

      // Inherit Java system variables
      String hadoopOpts;
      StringBuilder sb = new StringBuilder();
      Properties p = System.getProperties();
      for (String element : HIVE_SYS_PROP) {
        if (p.containsKey(element)) {
          sb.append(" -D" + element + "=" + p.getProperty(element));
        }
      }
      hadoopOpts = sb.toString();
      // Inherit the environment variables
      String[] env;
      Map<String, String> variables = new HashMap(System.getenv());
      // The user can specify the hadoop memory

      if ("local".equals(conf.getVar(HiveConf.ConfVars.HADOOPJT))) {
        // if we are running in local mode - then the amount of memory used
        // by the child jvm can no longer default to the memory used by the
        // parent jvm
        int hadoopMem = conf.getIntVar(HiveConf.ConfVars.HIVEHADOOPMAXMEM);
        if (hadoopMem == 0) {
          // remove env var that would default child jvm to use parent's memory
          // as default. child jvm would use default memory for a hadoop client
          variables.remove(HADOOP_MEM_KEY);
        } else {
          // user specified the memory for local mode hadoop run
          variables.put(HADOOP_MEM_KEY, String.valueOf(hadoopMem));
        }
      } else {
        // nothing to do - we are not running in local mode - only submitting
        // the job via a child process. in this case it's appropriate that the
        // child jvm use the same memory as the parent jvm
      }

      if (variables.containsKey(HADOOP_OPTS_KEY)) {
        variables.put(HADOOP_OPTS_KEY, variables.get(HADOOP_OPTS_KEY) + hadoopOpts);
      } else {
        variables.put(HADOOP_OPTS_KEY, hadoopOpts);
      }

      if (variables.containsKey(HIVE_DEBUG_RECURSIVE)) {
        configureDebugVariablesForChildJVM(variables);
      }

      env = new String[variables.size()];
      int pos = 0;
      for (Map.Entry<String, String> entry : variables.entrySet()) {
        String name = entry.getKey();
        String value = entry.getValue();
        env[pos++] = name + "=" + value;
      }
      // Run ExecDriver in another JVM
      executor = Runtime.getRuntime().exec(cmdLine, env, new File(workDir));

      StreamPrinter outPrinter =
          new StreamPrinter(
              executor.getInputStream(), null, SessionState.getConsole().getChildOutStream());
      StreamPrinter errPrinter =
          new StreamPrinter(
              executor.getErrorStream(), null, SessionState.getConsole().getChildErrStream());

      outPrinter.start();
      errPrinter.start();

      int exitVal = jobExecHelper.progressLocal(executor, getId());

      if (exitVal != 0) {
        LOG.error("Execution failed with exit status: " + exitVal);
      } else {
        LOG.info("Execution completed successfully");
      }

      return exitVal;
    } catch (Exception e) {
      e.printStackTrace();
      LOG.error("Exception: " + e.getMessage());
      return (1);
    } finally {
      try {
        // creating the context can create a bunch of files. So make
        // sure to clear it out
        if (ctxCreated) {
          ctx.clear();
        }

      } catch (Exception e) {
        LOG.error("Exception: " + e.getMessage());
      }
    }
  }
Esempio n. 2
0
  public int processCmd(String cmd) throws TException, HiveException {
    SessionState ss = SessionState.get();
    ss.setiscli(true);

    String cmd_trimmed = cmd.trim();
    String[] tokens = cmd_trimmed.split("\\s+");
    String cmd_1 = cmd_trimmed.substring(tokens[0].length()).trim();
    int ret = 0;

    if (tokens[0].equalsIgnoreCase("delete")) {
      Vector<String> nexttoken = new Vector<String>();
      nexttoken.add("jar");
      nexttoken.add("file");
      nexttoken.add("from");
      if (tokens.length < 2 || !nexttoken.contains(tokens[1].toLowerCase())) {
        String errorMessage =
            "\nif delete resource:\n"
                + "Usage: delete [FILE|JAR] <value> [<value>]*\n"
                + "if delete table rows:\n"
                + "Usage: delete from tableName [where searchCondition]";
        console.printError(errorMessage);
        ret = 1;

        return ret;
      }
    }

    if (tokens[0].equalsIgnoreCase("dfs") || tokens[0].equalsIgnoreCase("zktest")) {
      String errorMessage = "\ntdw hive do not support " + tokens[0].toLowerCase() + " operation\n";
      throw new HiveException(errorMessage);
    }

    if (cmd_trimmed.toLowerCase().equals("quit") || cmd_trimmed.toLowerCase().equals("exit")) {

      System.exit(0);

    } else if (cmd_trimmed.startsWith("!")) {

      String shell_cmd = cmd_trimmed.substring(1);

      try {
        Process executor = Runtime.getRuntime().exec(shell_cmd);
        StreamPrinter outPrinter = new StreamPrinter(executor.getInputStream(), null, ss.out);
        StreamPrinter errPrinter = new StreamPrinter(executor.getErrorStream(), null, ss.err);

        outPrinter.start();
        errPrinter.start();

        ret = executor.waitFor();
        if (ret != 0) {
          console.printError("Command failed with exit code = " + ret);
        }
      } catch (Exception e) {
        console.printError(
            "Exception raised from Shell command " + e.getLocalizedMessage(),
            org.apache.hadoop.util.StringUtils.stringifyException(e));
        ret = 1;
      }

    } else if (tokens[0].toLowerCase().equals("list")) {

      SessionState.ResourceType t;
      if (tokens.length < 2 || (t = SessionState.find_resource_type(tokens[1])) == null) {
        console.printError(
            "Usage: list ["
                + StringUtils.join(SessionState.ResourceType.values(), "|")
                + "] [<value> [<value>]*]");
        ret = 1;
      } else {
        List<String> filter = null;
        if (tokens.length >= 3) {
          System.arraycopy(tokens, 2, tokens, 0, tokens.length - 2);
          filter = Arrays.asList(tokens);
        }
        Set<String> s = ss.list_resource(t, filter);
        if (s != null && !s.isEmpty()) ss.out.println(StringUtils.join(s, "\n"));
      }

    } else {
      CommandProcessor proc = CommandProcessorFactory.get(tokens);
      if (proc != null) {
        if (proc instanceof Driver) {
          Driver qp = (Driver) proc;
          PrintStream out = ss.out;
          long start = System.currentTimeMillis();

          try {
            ret = qp.run(cmd);
          } catch (Exception e1) {
            e1.printStackTrace();
          }
          if (ret != 0) {
            qp.close();
            return ret;
          }

          Vector<String> res = new Vector<String>();
          try {
            while (qp.getResults(res)) {
              for (String r : res) {
                out.println(r);
              }
              res.clear();
              if (out.checkError()) {
                break;
              }
            }
          } catch (IOException e) {
            console.printError(
                "Failed with exception " + e.getClass().getName() + ":" + e.getMessage(),
                "\n" + org.apache.hadoop.util.StringUtils.stringifyException(e));
            ret = 1;
          }

          int cret = qp.close();
          if (ret == 0) {
            ret = cret;
          }

          long end = System.currentTimeMillis();
          if (end > start) {
            double timeTaken = (double) (end - start) / 1000.0;
            console.printInfo("Time taken: " + timeTaken + " seconds", null);
          }

        } else {
          try {
            ret = proc.run(cmd_1);
          } catch (Exception e) {
            e.printStackTrace();
          }
        }
      }
    }

    return ret;
  }