public void tearDownProcedureStore() {
    store.stop(false);
    try {
      store.getFileSystem().delete(store.getWALDir(), true);
    } catch (IOException e) {
      System.err.println("Error: Couldn't delete log dir. You can delete it manually to free up "
        + "disk space. Location: " + store.getWALDir().toString());
      System.err.println(e.toString());
    }
  }
@return a list of shuffled integers which represent state of proc id. First occurrence of a
        number denotes insert state, consecutive occurrences denote update states, and -ve
        value denotes delete state.
hbase-procedure/src/test/java/org/apache/hadoop/hbase/procedure2/store/wal/ProcedureWALLoaderPerformanceEvaluation.java