public static void setNullSrcPath(HiveConf conf, boolean aNullSrcPath) {
      if (conf.getBoolVar(HiveConf.ConfVars.HIVE_IN_TEST)) {
        nullSrcPathForTest = aNullSrcPath;
      }
    }
To be used only for testing purpose.
It has been used to make repl dump operation fail.
ql/src/java/org/apache/hadoop/hive/ql/parse/EximUtil.java