@Override
  protected boolean isFileDeletable(FileStatus fStat) {
    // This plugin does not handle the file deletions, so return true by default
    return true;
  }
Implementation of a file cleaner that checks if a empty directory with no subdirs and subfiles is
deletable when user scan snapshot feature is enabled
hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/SnapshotScannerHDFSAclCleaner.java