@Override
  public void addWALActionsListener(WALActionsListener listener) {
    listeners.add(listener);
  }
Find the archived WAL file path if it is not able to locate in WALs dir.
@param path - active WAL file path
@param conf - configuration
@return archived path if exists, null - otherwise
@throws IOException exception
hbase-server/src/main/java/org/apache/hadoop/hbase/wal/AbstractFSWALProvider.java