public void configure(JobConf conf) {
    numberOfCenters = Integer.valueOf(conf.get("numberOfCenters"));
    centersDirectory = conf.get("centersReadDirectory");

    try {
      Configuration c = new Configuration();
      FileSystem fs = FileSystem.get(c);

      for (int index = 0; index < numberOfCenters; ++index) {
        SequenceFile.Reader reader =
            new SequenceFile.Reader(fs, new Path(centersDirectory + "/centers/" + index), c);

        LongWritable key = new LongWritable();
        Point value = new Point();

        reader.next(key, value);

        Point center = (Point) value;

        centers.add(center);

        reader.close();
      }
    } catch (IOException e) {
      // do nothing
      // I hope this doesn't happen
      System.out.println("well, damn.");
      e.printStackTrace();
    }
  }
Esempio n. 2
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    public Writable call(Class<?> protocol, Writable param, long receivedTime) throws IOException {
      try {
        Invocation call = (Invocation) param;
        if (verbose) log("Call: " + call);

        Method method = protocol.getMethod(call.getMethodName(), call.getParameterClasses());
        method.setAccessible(true);

        int qTime = (int) (System.currentTimeMillis() - receivedTime);
        long startNanoTime = System.nanoTime();
        Object value = method.invoke(instance, call.getParameters());
        long processingMicroTime = (System.nanoTime() - startNanoTime) / 1000;
        if (LOG.isDebugEnabled()) {
          LOG.debug(
              "Served: "
                  + call.getMethodName()
                  + " queueTime (millisec)= "
                  + qTime
                  + " procesingTime (microsec)= "
                  + processingMicroTime);
        }
        rpcMetrics.rpcQueueTime.inc(qTime);
        rpcMetrics.rpcProcessingTime.inc(processingMicroTime);

        MetricsTimeVaryingRate m =
            (MetricsTimeVaryingRate) rpcMetrics.registry.get(call.getMethodName());
        if (m == null) {
          try {
            m = new MetricsTimeVaryingRate(call.getMethodName(), rpcMetrics.registry);
          } catch (IllegalArgumentException iae) {
            // the metrics has been registered; re-fetch the handle
            LOG.debug("Error register " + call.getMethodName(), iae);
            m = (MetricsTimeVaryingRate) rpcMetrics.registry.get(call.getMethodName());
          }
        }
        // record call time in microseconds
        m.inc(processingMicroTime);

        if (verbose) log("Return: " + value);

        return new ObjectWritable(method.getReturnType(), value);

      } catch (InvocationTargetException e) {
        Throwable target = e.getTargetException();
        if (target instanceof IOException) {
          throw (IOException) target;
        } else {
          IOException ioe = new IOException(target.toString());
          ioe.setStackTrace(target.getStackTrace());
          throw ioe;
        }
      } catch (Throwable e) {
        if (!(e instanceof IOException)) {
          LOG.error("Unexpected throwable object ", e);
        }
        IOException ioe = new IOException(e.toString());
        ioe.setStackTrace(e.getStackTrace());
        throw ioe;
      }
    }
 /**
  * Get the cause of an I/O exception if caused by a possible disk error
  *
  * @param ioe an I/O exception
  * @return cause if the I/O exception is caused by a possible disk error; null otherwise.
  */
 static IOException getCauseIfDiskError(IOException ioe) {
   if (ioe.getMessage() != null && ioe.getMessage().startsWith(DISK_ERROR)) {
     return (IOException) ioe.getCause();
   } else {
     return null;
   }
 }
Esempio n. 4
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  //
  // The main work loop
  //
  public void run() {

    //
    // Poll the Namenode (once every 5 minutes) to find the size of the
    // pending edit log.
    //
    long period = 5 * 60; // 5 minutes
    long lastCheckpointTime = 0;
    if (checkpointPeriod < period) {
      period = checkpointPeriod;
    }

    while (shouldRun) {
      try {
        Thread.sleep(1000 * period);
      } catch (InterruptedException ie) {
        // do nothing
      }
      if (!shouldRun) {
        break;
      }
      try {
        long now = System.currentTimeMillis();

        long size = namenode.getEditLogSize();
        if (size >= checkpointSize || now >= lastCheckpointTime + 1000 * checkpointPeriod) {
          doCheckpoint();
          lastCheckpointTime = now;
        }
      } catch (IOException e) {
        LOG.error("Exception in doCheckpoint: ");
        LOG.error(StringUtils.stringifyException(e));
        e.printStackTrace();
        checkpointImage.imageDigest = null;
      } catch (Throwable e) {
        LOG.error("Throwable Exception in doCheckpoint: ");
        LOG.error(StringUtils.stringifyException(e));
        e.printStackTrace();
        Runtime.getRuntime().exit(-1);
      }
    }
  }
Esempio n. 5
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  /**
   * Construct a client-side proxy that implements the named protocol, talking to a server at the
   * named address.
   *
   * @param protocol protocol
   * @param clientVersion client's version
   * @param addr server address
   * @param ticket security ticket
   * @param conf configuration
   * @param factory socket factory
   * @param rpcTimeout max time for each rpc; 0 means no timeout
   * @return the proxy
   * @throws IOException if any error occurs
   */
  @SuppressWarnings("unchecked")
  public static <T extends VersionedProtocol> ProtocolProxy<T> getProtocolProxy(
      Class<T> protocol,
      long clientVersion,
      InetSocketAddress addr,
      UserGroupInformation ticket,
      Configuration conf,
      SocketFactory factory,
      int rpcTimeout)
      throws IOException {
    T proxy =
        (T)
            Proxy.newProxyInstance(
                protocol.getClassLoader(),
                new Class[] {protocol},
                new Invoker(addr, ticket, conf, factory, rpcTimeout, protocol));
    String protocolName = protocol.getName();

    try {
      ProtocolSignature serverInfo =
          proxy.getProtocolSignature(
              protocolName, clientVersion, ProtocolSignature.getFingerprint(protocol.getMethods()));
      return new ProtocolProxy<T>(protocol, proxy, serverInfo.getMethods());
    } catch (RemoteException re) {
      IOException ioe = re.unwrapRemoteException(IOException.class);
      if (ioe.getMessage()
          .startsWith(IOException.class.getName() + ": " + NoSuchMethodException.class.getName())) {
        // Method getProtocolSignature not supported
        long serverVersion = proxy.getProtocolVersion(protocol.getName(), clientVersion);
        if (serverVersion == clientVersion) {
          return new ProtocolProxy<T>(protocol, proxy, null);
        }
        throw new VersionMismatch(protocolName, clientVersion, serverVersion, proxy);
      }
      throw re;
    }
  }
Esempio n. 6
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  public BufferedReader loadDataFromFile(String filepath, long offset) {
    try {
      Path pt = new Path(filepath);
      FileSystem fs = FileSystem.get(fsConf);
      InputStreamReader isr;
      if (fs.isDirectory(pt)) { // multiple parts
        isr = new InputStreamReader(OpenMultiplePartsWithOffset(fs, pt, offset));
      } else { // single file
        FSDataInputStream fileHandler = fs.open(pt);
        if (offset > 0) fileHandler.seek(offset);
        isr = new InputStreamReader(fileHandler);
      }

      BufferedReader reader = new BufferedReader(isr);
      if (offset > 0) reader.readLine(); // skip first line in case of seek
      return reader;
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    assert false : "Should not reach here!";
    return null;
  }
Esempio n. 7
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  public void generateFileChunks(JspWriter out, HttpServletRequest req) throws IOException {
    long startOffset = 0;

    int chunkSizeToView = 0;

    String referrer = req.getParameter("referrer");
    boolean noLink = false;
    if (referrer == null) {
      noLink = true;
    }

    String filename = req.getParameter("filename");
    if (filename == null) {
      out.print("Invalid input (file name absent)");
      return;
    }

    String namenodeInfoPortStr = req.getParameter("namenodeInfoPort");
    int namenodeInfoPort = -1;
    if (namenodeInfoPortStr != null) namenodeInfoPort = Integer.parseInt(namenodeInfoPortStr);

    String chunkSizeToViewStr = req.getParameter("chunkSizeToView");
    if (chunkSizeToViewStr != null && Integer.parseInt(chunkSizeToViewStr) > 0)
      chunkSizeToView = Integer.parseInt(chunkSizeToViewStr);
    else chunkSizeToView = jspHelper.defaultChunkSizeToView;

    if (!noLink) {
      out.print("<h3>Tail of File: ");
      JspHelper.printPathWithLinks(filename, out, namenodeInfoPort);
      out.print("</h3><hr>");
      out.print("<a href=\"" + referrer + "\">Go Back to File View</a><hr>");
    } else {
      out.print("<h3>" + filename + "</h3>");
    }
    out.print("<b>Chunk size to view (in bytes, up to file's DFS block size): </b>");
    out.print(
        "<input type=\"text\" name=\"chunkSizeToView\" value="
            + chunkSizeToView
            + " size=10 maxlength=10>");
    out.print("&nbsp;&nbsp;<input type=\"submit\" name=\"submit\" value=\"Refresh\"><hr>");
    out.print("<input type=\"hidden\" name=\"filename\" value=\"" + filename + "\">");
    out.print(
        "<input type=\"hidden\" name=\"namenodeInfoPort\" value=\"" + namenodeInfoPort + "\">");
    if (!noLink) out.print("<input type=\"hidden\" name=\"referrer\" value=\"" + referrer + "\">");

    // fetch the block from the datanode that has the last block for this file
    DFSClient dfs = new DFSClient(jspHelper.nameNodeAddr, jspHelper.conf);
    List<LocatedBlock> blocks =
        dfs.namenode.getBlockLocations(filename, 0, Long.MAX_VALUE).getLocatedBlocks();
    if (blocks == null || blocks.size() == 0) {
      out.print("No datanodes contain blocks of file " + filename);
      dfs.close();
      return;
    }
    LocatedBlock lastBlk = blocks.get(blocks.size() - 1);
    long blockSize = lastBlk.getBlock().getNumBytes();
    long blockId = lastBlk.getBlock().getBlockId();
    long genStamp = lastBlk.getBlock().getGenerationStamp();
    DatanodeInfo chosenNode;
    try {
      chosenNode = jspHelper.bestNode(lastBlk);
    } catch (IOException e) {
      out.print(e.toString());
      dfs.close();
      return;
    }
    InetSocketAddress addr = NetUtils.createSocketAddr(chosenNode.getName());
    // view the last chunkSizeToView bytes while Tailing
    if (blockSize >= chunkSizeToView) startOffset = blockSize - chunkSizeToView;
    else startOffset = 0;

    out.print("<textarea cols=\"100\" rows=\"25\" wrap=\"virtual\" style=\"width:100%\" READONLY>");
    jspHelper.streamBlockInAscii(
        addr, blockId, genStamp, blockSize, startOffset, chunkSizeToView, out);
    out.print("</textarea>");
    dfs.close();
  }
Esempio n. 8
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      @Override
      public Writable call(
          org.apache.hadoop.ipc.RPC.Server server,
          String protocolName,
          Writable rpcRequest,
          long receivedTime)
          throws IOException {
        try {
          Invocation call = (Invocation) rpcRequest;
          if (server.verbose) log("Call: " + call);

          // Verify rpc version
          if (call.getRpcVersion() != writableRpcVersion) {
            // Client is using a different version of WritableRpc
            throw new IOException(
                "WritableRpc version mismatch, client side version="
                    + call.getRpcVersion()
                    + ", server side version="
                    + writableRpcVersion);
          }

          long clientVersion = call.getProtocolVersion();
          final String protoName;
          ProtoClassProtoImpl protocolImpl;
          if (call.declaringClassProtocolName.equals(VersionedProtocol.class.getName())) {
            // VersionProtocol methods are often used by client to figure out
            // which version of protocol to use.
            //
            // Versioned protocol methods should go the protocolName protocol
            // rather than the declaring class of the method since the
            // the declaring class is VersionedProtocol which is not
            // registered directly.
            // Send the call to the highest  protocol version
            VerProtocolImpl highest =
                server.getHighestSupportedProtocol(RPC.RpcKind.RPC_WRITABLE, protocolName);
            if (highest == null) {
              throw new IOException("Unknown protocol: " + protocolName);
            }
            protocolImpl = highest.protocolTarget;
          } else {
            protoName = call.declaringClassProtocolName;

            // Find the right impl for the protocol based on client version.
            ProtoNameVer pv = new ProtoNameVer(call.declaringClassProtocolName, clientVersion);
            protocolImpl = server.getProtocolImplMap(RPC.RpcKind.RPC_WRITABLE).get(pv);
            if (protocolImpl == null) { // no match for Protocol AND Version
              VerProtocolImpl highest =
                  server.getHighestSupportedProtocol(RPC.RpcKind.RPC_WRITABLE, protoName);
              if (highest == null) {
                throw new IOException("Unknown protocol: " + protoName);
              } else { // protocol supported but not the version that client wants
                throw new RPC.VersionMismatch(protoName, clientVersion, highest.version);
              }
            }
          }

          // Invoke the protocol method

          long startTime = Time.now();
          Method method =
              protocolImpl.protocolClass.getMethod(
                  call.getMethodName(), call.getParameterClasses());
          method.setAccessible(true);
          server.rpcDetailedMetrics.init(protocolImpl.protocolClass);
          Object value = method.invoke(protocolImpl.protocolImpl, call.getParameters());
          int processingTime = (int) (Time.now() - startTime);
          int qTime = (int) (startTime - receivedTime);
          if (LOG.isDebugEnabled()) {
            LOG.debug(
                "Served: "
                    + call.getMethodName()
                    + " queueTime= "
                    + qTime
                    + " procesingTime= "
                    + processingTime);
          }
          server.rpcMetrics.addRpcQueueTime(qTime);
          server.rpcMetrics.addRpcProcessingTime(processingTime);
          server.rpcDetailedMetrics.addProcessingTime(call.getMethodName(), processingTime);
          if (server.verbose) log("Return: " + value);

          return new ObjectWritable(method.getReturnType(), value);

        } catch (InvocationTargetException e) {
          Throwable target = e.getTargetException();
          if (target instanceof IOException) {
            throw (IOException) target;
          } else {
            IOException ioe = new IOException(target.toString());
            ioe.setStackTrace(target.getStackTrace());
            throw ioe;
          }
        } catch (Throwable e) {
          if (!(e instanceof IOException)) {
            LOG.error("Unexpected throwable object ", e);
          }
          IOException ioe = new IOException(e.toString());
          ioe.setStackTrace(e.getStackTrace());
          throw ioe;
        }
      }
Esempio n. 9
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  /**
   * @param argv The parameters passed to this program.
   * @exception Exception if the filesystem does not exist.
   * @return 0 on success, non zero on error.
   */
  private int processArgs(String[] argv) throws Exception {

    if (argv.length < 1) {
      printUsage("");
      return -1;
    }

    int exitCode = -1;
    int i = 0;
    String cmd = argv[i++];

    //
    // verify that we have enough command line parameters
    //
    if ("-geteditsize".equals(cmd)) {
      if (argv.length != 1) {
        printUsage(cmd);
        return exitCode;
      }
    } else if ("-checkpoint".equals(cmd)) {
      if (argv.length != 1 && argv.length != 2) {
        printUsage(cmd);
        return exitCode;
      }
      if (argv.length == 2 && !"force".equals(argv[i])) {
        printUsage(cmd);
        return exitCode;
      }
    }

    exitCode = 0;
    try {
      if ("-checkpoint".equals(cmd)) {
        long size = namenode.getEditLogSize();
        if (size >= checkpointSize || argv.length == 2 && "force".equals(argv[i])) {
          doCheckpoint();
        } else {
          System.err.println(
              "EditLog size "
                  + size
                  + " bytes is "
                  + "smaller than configured checkpoint "
                  + "size "
                  + checkpointSize
                  + " bytes.");
          System.err.println("Skipping checkpoint.");
        }
      } else if ("-geteditsize".equals(cmd)) {
        long size = namenode.getEditLogSize();
        System.out.println("EditLog size is " + size + " bytes");
      } else {
        exitCode = -1;
        LOG.error(cmd.substring(1) + ": Unknown command");
        printUsage("");
      }
    } catch (RemoteException e) {
      //
      // This is a error returned by hadoop server. Print
      // out the first line of the error mesage, ignore the stack trace.
      exitCode = -1;
      try {
        String[] content;
        content = e.getLocalizedMessage().split("\n");
        LOG.error(cmd.substring(1) + ": " + content[0]);
      } catch (Exception ex) {
        LOG.error(cmd.substring(1) + ": " + ex.getLocalizedMessage());
      }
    } catch (IOException e) {
      //
      // IO exception encountered locally.
      //
      exitCode = -1;
      LOG.error(cmd.substring(1) + ": " + e.getLocalizedMessage());
    } finally {
      // Does the RPC connection need to be closed?
    }
    return exitCode;
  }
Esempio n. 10
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  public void generateFileDetails(JspWriter out, HttpServletRequest req, Configuration conf)
      throws IOException, InterruptedException {

    int chunkSizeToView = 0;
    long startOffset = 0;
    int datanodePort;

    String blockIdStr = null;
    long currBlockId = 0;
    blockIdStr = req.getParameter("blockId");
    if (blockIdStr == null) {
      out.print("Invalid input (blockId absent)");
      return;
    }
    currBlockId = Long.parseLong(blockIdStr);

    String datanodePortStr = req.getParameter("datanodePort");
    if (datanodePortStr == null) {
      out.print("Invalid input (datanodePort absent)");
      return;
    }
    datanodePort = Integer.parseInt(datanodePortStr);

    String namenodeInfoPortStr = req.getParameter("namenodeInfoPort");
    int namenodeInfoPort = -1;
    if (namenodeInfoPortStr != null) namenodeInfoPort = Integer.parseInt(namenodeInfoPortStr);

    String chunkSizeToViewStr = req.getParameter("chunkSizeToView");
    if (chunkSizeToViewStr != null && Integer.parseInt(chunkSizeToViewStr) > 0) {
      chunkSizeToView = Integer.parseInt(chunkSizeToViewStr);
    } else {
      chunkSizeToView = JspHelper.getDefaultChunkSize(conf);
    }

    String startOffsetStr = req.getParameter("startOffset");
    if (startOffsetStr == null || Long.parseLong(startOffsetStr) < 0) startOffset = 0;
    else startOffset = Long.parseLong(startOffsetStr);

    String filename = HtmlQuoting.unquoteHtmlChars(req.getParameter("filename"));
    if (filename == null || filename.length() == 0) {
      out.print("Invalid input");
      return;
    }

    String blockSizeStr = req.getParameter("blockSize");
    long blockSize = 0;
    if (blockSizeStr == null || blockSizeStr.length() == 0) {
      out.print("Invalid input");
      return;
    }
    blockSize = Long.parseLong(blockSizeStr);

    String tokenString = req.getParameter(JspHelper.DELEGATION_PARAMETER_NAME);
    UserGroupInformation ugi = JspHelper.getUGI(req, conf);
    DFSClient dfs = JspHelper.getDFSClient(ugi, jspHelper.nameNodeAddr, conf);
    List<LocatedBlock> blocks =
        dfs.namenode.getBlockLocations(filename, 0, Long.MAX_VALUE).getLocatedBlocks();
    // Add the various links for looking at the file contents
    // URL for downloading the full file
    String downloadUrl =
        "http://"
            + req.getServerName()
            + ":"
            + +req.getServerPort()
            + "/streamFile"
            + URLEncoder.encode(filename, "UTF-8")
            + "?"
            + JspHelper.DELEGATION_PARAMETER_NAME
            + "="
            + tokenString;
    out.print("<a name=\"viewOptions\"></a>");
    out.print("<a href=\"" + downloadUrl + "\">Download this file</a><br>");

    DatanodeInfo chosenNode;
    // URL for TAIL
    LocatedBlock lastBlk = blocks.get(blocks.size() - 1);
    long blockId = lastBlk.getBlock().getBlockId();
    try {
      chosenNode = jspHelper.bestNode(lastBlk);
    } catch (IOException e) {
      out.print(e.toString());
      dfs.close();
      return;
    }
    String fqdn = InetAddress.getByName(chosenNode.getHost()).getCanonicalHostName();
    String tailUrl =
        "http://"
            + fqdn
            + ":"
            + chosenNode.getInfoPort()
            + "/tail.jsp?filename="
            + URLEncoder.encode(filename, "UTF-8")
            + "&namenodeInfoPort="
            + namenodeInfoPort
            + "&chunkSizeToView="
            + chunkSizeToView
            + "&referrer="
            + URLEncoder.encode(req.getRequestURL() + "?" + req.getQueryString(), "UTF-8")
            + JspHelper.getDelegationTokenUrlParam(tokenString);
    out.print("<a href=\"" + tailUrl + "\">Tail this file</a><br>");

    out.print("<form action=\"/browseBlock.jsp\" method=GET>");
    out.print("<b>Chunk size to view (in bytes, up to file's DFS block size): </b>");
    out.print("<input type=\"hidden\" name=\"blockId\" value=\"" + currBlockId + "\">");
    out.print("<input type=\"hidden\" name=\"blockSize\" value=\"" + blockSize + "\">");
    out.print("<input type=\"hidden\" name=\"startOffset\" value=\"" + startOffset + "\">");
    out.print("<input type=\"hidden\" name=\"filename\" value=\"" + filename + "\">");
    out.print("<input type=\"hidden\" name=\"datanodePort\" value=\"" + datanodePort + "\">");
    out.print(
        "<input type=\"hidden\" name=\"namenodeInfoPort\" value=\"" + namenodeInfoPort + "\">");
    out.print(
        "<input type=\"text\" name=\"chunkSizeToView\" value="
            + chunkSizeToView
            + " size=10 maxlength=10>");
    out.print("&nbsp;&nbsp;<input type=\"submit\" name=\"submit\" value=\"Refresh\">");
    out.print("</form>");
    out.print("<hr>");
    out.print("<a name=\"blockDetails\"></a>");
    out.print("<B>Total number of blocks: " + blocks.size() + "</B><br>");
    // generate a table and dump the info
    out.println("\n<table>");
    for (LocatedBlock cur : blocks) {
      out.print("<tr>");
      blockId = cur.getBlock().getBlockId();
      blockSize = cur.getBlock().getNumBytes();
      String blk = "blk_" + Long.toString(blockId);
      out.print("<td>" + Long.toString(blockId) + ":</td>");
      DatanodeInfo[] locs = cur.getLocations();
      for (int j = 0; j < locs.length; j++) {
        String datanodeAddr = locs[j].getName();
        datanodePort =
            Integer.parseInt(
                datanodeAddr.substring(datanodeAddr.indexOf(':') + 1, datanodeAddr.length()));
        fqdn = InetAddress.getByName(locs[j].getHost()).getCanonicalHostName();
        String blockUrl =
            "http://"
                + fqdn
                + ":"
                + locs[j].getInfoPort()
                + "/browseBlock.jsp?blockId="
                + Long.toString(blockId)
                + "&blockSize="
                + blockSize
                + "&filename="
                + URLEncoder.encode(filename, "UTF-8")
                + "&datanodePort="
                + datanodePort
                + "&genstamp="
                + cur.getBlock().getGenerationStamp()
                + "&namenodeInfoPort="
                + namenodeInfoPort
                + "&chunkSizeToView="
                + chunkSizeToView;
        out.print(
            "<td>&nbsp</td>" + "<td><a href=\"" + blockUrl + "\">" + datanodeAddr + "</a></td>");
      }
      out.println("</tr>");
    }
    out.println("</table>");
    out.print("<hr>");
    String namenodeHost = jspHelper.nameNodeAddr.getHostName();
    out.print(
        "<br><a href=\"http://"
            + InetAddress.getByName(namenodeHost).getCanonicalHostName()
            + ":"
            + namenodeInfoPort
            + "/dfshealth.jsp\">Go back to DFS home</a>");
    dfs.close();
  }