public void setPathToAliases(Map<Path, List<String>> pathToAliases) {
    for (Path p : pathToAliases.keySet()) {
      StringInternUtils.internUriStringsInPath(p);
    }
    this.pathToAliases = pathToAliases;
  }
Whether LLAP IO will be used for inputs.
ql/src/java/org/apache/hadoop/hive/ql/plan/MapWork.java