@Override
  public HStore getStore(byte[] column) {
    return this.stores.get(column);
  }
make sure have been through lease recovery before get file status, so the file length can be
trusted.
@param p File to check.
@return True if file was zero-length (and if so, we'll delete it in here).
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java