How to use

performDecodeImpl

method

in

org.apache.hadoop.io.erasurecode.rawcoder.AbstractNativeRawDecoder

@Override
protected void doDecode(ByteBufferDecodingState decodingState)
  throws IOException {
 decoderLock.readLock().lock();
 try {
  if (nativeCoder == 0) {
   throw new IOException(String.format("%s closed",
     getClass().getSimpleName()));
  }
  int[] inputOffsets = new int[decodingState.inputs.length];
  int[] outputOffsets = new int[decodingState.outputs.length];
  ByteBuffer buffer;
  for (int i = 0; i < decodingState.inputs.length; ++i) {
   buffer = decodingState.inputs[i];
   if (buffer != null) {
    inputOffsets[i] = buffer.position();
   }
  }
  for (int i = 0; i < decodingState.outputs.length; ++i) {
   buffer = decodingState.outputs[i];
   outputOffsets[i] = buffer.position();
  }
  performDecodeImpl(decodingState.inputs, inputOffsets,
    decodingState.decodeLength, decodingState.erasedIndexes,
    decodingState.outputs, outputOffsets);
 } finally {
  decoderLock.readLock().unlock();
 }
}

@Override
protected void doDecode(ByteBufferDecodingState decodingState) {
 int[] inputOffsets = new int[decodingState.inputs.length];
 int[] outputOffsets = new int[decodingState.outputs.length];
 ByteBuffer buffer;
 for (int i = 0; i < decodingState.inputs.length; ++i) {
  buffer = decodingState.inputs[i];
  if (buffer != null) {
   inputOffsets[i] = buffer.position();
  }
 }
 for (int i = 0; i < decodingState.outputs.length; ++i) {
  buffer = decodingState.outputs[i];
  outputOffsets[i] = buffer.position();
 }
 performDecodeImpl(decodingState.inputs, inputOffsets,
   decodingState.decodeLength, decodingState.erasedIndexes,
   decodingState.outputs, outputOffsets);
}