public static RecordUpdater getAcidRecordUpdater(JobConf jc, TableDesc tableInfo, int bucket, FileSinkDesc conf,
      Path outPath, ObjectInspector inspector, Reporter reporter, int rowIdColNum) throws HiveException, IOException {
    return getAcidRecordUpdater(jc, tableInfo, bucket, conf, outPath, inspector, reporter, rowIdColNum, null);
  }
Checks if files are in same format as the given input format.

Note: an empty set of files is considered compliant.
ql/src/java/org/apache/hadoop/hive/ql/io/HiveFileFormatUtils.java