protected Entry filterEntry(Entry entry) {
    for (WALEntryFilter filter : filters) {
      if (entry == null) {
        return null;
      }
      entry = filter.filter(entry);
    }
    return entry;
  }
A {@link WALEntryFilter} which contains multiple filters and applies them in chain order
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/ChainWALEntryFilter.java