@Override
    public void close() throws IOException {
      super.cleanup(this.jobConf);
    }
Closes this stream and releases any system resources associated with it. If the stream is
already closed then invoking this method has no effect.
@throws IOException if an I/O error occurs
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestMultiTableSnapshotInputFormat.java