public long getVisibilityTxnId() {
      return visibilityTxnId;
    }
@param minWriteId min writeId of the delta directory
@param maxWriteId max writeId of the delta directory
@param stmtIds delta dir suffixes when a single txn writes &gt; 1 delta in the same partition
@param visibilityTxnId maybe 0, if the dir name didn't have it.  txnid:0 is always visible
@param deltaFiles bucketFiles in the directory
ql/src/java/org/apache/hadoop/hive/ql/io/AcidInputFormat.java