How to use

getPos

method

in

org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader$PositionTrackingInputStream

/**
 * Process image file.
 */
public void go() throws IOException  {
 DataInputStream in = null;
 PositionTrackingInputStream tracker = null;
 ImageLoader fsip = null;
 boolean done = false;
 try {
  tracker = new PositionTrackingInputStream(new BufferedInputStream(
       new FileInputStream(new File(inputFile))));
  in = new DataInputStream(tracker);
  int imageVersionFile = findImageVersion(in);
  fsip = ImageLoader.LoaderFactory.getLoader(imageVersionFile);
  if(fsip == null) 
   throw new IOException("No image processor to read version " +
     imageVersionFile + " is available.");
  fsip.loadImage(in, processor, skipBlocks);
  done = true;
 } finally {
  if (!done) {
   if (tracker != null) {
    LOG.error("image loading failed at offset " + tracker.getPos());
   } else {
    LOG.error("Failed to load image file.");
   }
  }
  IOUtils.cleanupWithLogger(LOG, in, tracker);
 }
}

long skipAmt = log.length() - tracker.getPos();
if (skipAmt > 0) {
 if (LOG.isDebugEnabled()) {

/**
 * Process image file.
 */
public void go() throws IOException  {
 DataInputStream in = null;
 PositionTrackingInputStream tracker = null;
 ImageLoader fsip = null;
 boolean done = false;
 try {
  tracker = new PositionTrackingInputStream(new BufferedInputStream(
       new FileInputStream(new File(inputFile))));
  in = new DataInputStream(tracker);
  int imageVersionFile = findImageVersion(in);
  fsip = ImageLoader.LoaderFactory.getLoader(imageVersionFile);
  if(fsip == null) 
   throw new IOException("No image processor to read version " +
     imageVersionFile + " is available.");
  fsip.loadImage(in, processor, skipBlocks);
  done = true;
 } finally {
  if (!done) {
   LOG.error("image loading failed at offset " + tracker.getPos());
  }
  IOUtils.cleanup(LOG, in, tracker);
 }
}

long skipAmt = log.length() - tracker.getPos();
if (skipAmt > 0) {
 if (LOG.isDebugEnabled()) {

long skipAmt = log.length() - tracker.getPos();
if (skipAmt > 0) {
 if (LOG.isDebugEnabled()) {

/**
 * Process image file.
 */
public void go() throws IOException  {
 DataInputStream in = null;
 PositionTrackingInputStream tracker = null;
 ImageLoader fsip = null;
 boolean done = false;
 try {
  tracker = new PositionTrackingInputStream(new BufferedInputStream(
       new FileInputStream(new File(inputFile))));
  in = new DataInputStream(tracker);
  int imageVersionFile = findImageVersion(in);
  fsip = ImageLoader.LoaderFactory.getLoader(imageVersionFile);
  if(fsip == null) 
   throw new IOException("No image processor to read version " +
     imageVersionFile + " is available.");
  fsip.loadImage(in, processor, skipBlocks);
  done = true;
 } finally {
  if (!done) {
   LOG.error("image loading failed at offset " + tracker.getPos());
  }
  IOUtils.cleanup(LOG, in, tracker);
 }
}

@Override
public long getPosition() {
 return tracker.getPos();
}

@Override
public long getPosition() {
 return tracker.getPos();
}

@Override
public long getPosition() throws IOException{
 return tracker.getPos();
}

@Override
public long getPosition() {
 return tracker.getPos();
}

@Override
public long getPosition() {
 if (state == State.OPEN) {
  return tracker.getPos();
 } else {
  return 0;
 }
}

@Override
public long getPosition() {
 if (state == State.OPEN) {
  return tracker.getPos();
 } else {
  return 0;
 }
}

@Override
public long getPosition() {
 if (state == State.OPEN) {
  return tracker.getPos();
 } else {
  return 0;
 }
}

@Override
public long getPosition() {
 return tracker.getPos();
}