private static Scanner setupScanner(final Context context, final String tableName, final Configuration config) throws IOException {
    final RangeInputSplit split = (RangeInputSplit) context.getInputSplit();
    final Range splitRange = split.getRange();
    final Scanner scanner = AccumuloRyaUtils.getScanner(tableName, config);
    scanner.setRange(splitRange);

    return scanner;
}
 

@Override
protected void setupIterators(TaskAttemptContext context, Scanner scanner, String tableName,
        RangeInputSplit split) {
}
 

/**
 * getSplits will retrieve all the splits for a job given a zoom level.
 *
 * @param context - the Job context.
 * @return The list of splits from the table.
 * @throws IOException when there is an issue getting the splits for the job.
 */
@Override
public List<InputSplit> getSplits(JobContext context) throws IOException
{

  // get the configuration
  Configuration conf = context.getConfiguration();

  // get the input context for the image
  ImageInputFormatContext tifc = ImageInputFormatContext.load(conf);

  // get the zoom level of the pyramid
  //int zl = tifc.getZoomLevel();

  // get the splits from the super (Accumulo InputFormatBase)
  List<InputSplit> splits = super.getSplits(context);

  // prepare the return list
  List<InputSplit> retList = new ArrayList<InputSplit>(splits.size());

  // TODO: make this pull back integer pairs - so there is no need to smooth and go through things again

  // make sure all the splits will conform to the splits type expected by the core
  //List<RangeInputSplit>splits2 = smoothSplits(splits);

  // go through all the splits and create the output splits
  for (InputSplit is : splits)
  {

    // an Accumulo split is a RangeInputSplit
    org.apache.accumulo.core.client.mapreduce.RangeInputSplit ris =
        (org.apache.accumulo.core.client.mapreduce.RangeInputSplit) is;

    // get the range
    Range r = ris.getRange();

    log.info("Range: " + r.toString());

    // get the start
    Key sk = r.getStartKey();

    // get the end
    Key ek = r.getEndKey();

    // get the tile ids at the start and end of the range
    long sl = 0;
    long el = Long.MAX_VALUE >> 8;

    // check the start of the range - make sure it is a usable value
    if (sk != null)
    {
      Text sr = sk.getRow();
      if (sr.toString().equals(MrGeoAccumuloConstants.MRGEO_ACC_METADATA))
      {
        continue;
      }
      sl = AccumuloUtils.toLong(sr);
    }

    // check the end of the range - make sure it is a usable value
    if (ek != null)
    {
      Text er = ek.getRow();
      if (er.toString().equals(MrGeoAccumuloConstants.MRGEO_ACC_METADATA))
      {
        continue;
      }
      el = AccumuloUtils.toLong(er);
    }

    // build the split used by core
    TiledInputSplit tis = new TiledInputSplit(
        is, // input split
        sl, // start tile id
        el, // end tile id
        tifc.getZoomLevel(), // zoom level
        tifc.getTileSize() // tile size
    );
    retList.add(tis);

    Tile tile1 = TMSUtils.tileid(sl, tifc.getZoomLevel());
    Tile tile2 = TMSUtils.tileid(el, tifc.getZoomLevel());

    log.info("\tSplit starting at " + sl + " (" + tile1.tx + "," + tile1.ty + ")" + " and ending at " + el + " (" +
        tile2.tx + "," + tile2.ty + ")");

  }

  return retList;

}