Changed the comment for this one :

 * ManageJobConfig quick workaround to initialize the job with column needed
 *
 * Almost the same code as the one from hive source code (specific case for column storage)
 * https://github.com/apache/hive/blob/branch-0.10/ql/src/java/org/apache/hadoop/hive/ql/io/HiveInputFormat.java#L378
 *
 * Parquet is not a Hive native format, so we cannot use the code from hive directly.
 *