public static String firstSnapshot(String prefix) {
    return prefix + OLD_SNAPSHOT;
  }
Gets the name of the first snapshot, combined with the prefix.
@param prefix the prefix that needs to be attached to the default hive replication first snapshot name.
@return name to be used as first snapshot.
ql/src/java/org/apache/hadoop/hive/ql/exec/repl/util/SnapshotUtils.java