@Override
  protected FileSplit makeSplit(Path file, long start, long length, String[] hosts, String[] inMemoryHosts) {
    return makeSplitInternal(file, start, length, hosts, inMemoryHosts);
  }
SkippingInputFormat is a header/footer aware input format. It truncates
splits identified by TextInputFormat. Header and footers are removed
from the splits.

This InputFormat does NOT support Compressed Files!
ql/src/java/org/apache/hadoop/hive/ql/io/SkippingTextInputFormat.java