@Override
  public void configure(JobConf conf) {
    this.conf = conf;
    super.configure(conf);
  }
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