@Override
  public long getLength() {
    try {
      return baseMapRedSplit.getLength();
    } catch (IOException e) {
      LOG.warn("Exception in HCatSplit", e);
    }
    return 0; // we errored
  }
Gets the table schema.
@return the table schema
hcatalog/core/src/main/java/org/apache/hive/hcatalog/mapreduce/HCatSplit.java