@Override
  protected boolean valiateFilename(Path file) {
    return HFileLink.isBackReferencesDir(file) || HFileLink.isBackReferencesDir(file.getParent())
      || StoreFileInfo.validateStoreFileName(file.getName());
  }
HFile cleaner that uses the timestamp of the hfile to determine if it should be deleted. By
default they are allowed to live for {@value #DEFAULT_TTL}
hbase-server/src/main/java/org/apache/hadoop/hbase/master/cleaner/TimeToLiveHFileCleaner.java