WALEntryFilter getWalEntryFilter() {
    return walEntryFilter;
  }
Call after {@link #initializeWALEntryFilter(UUID)} else it will be null.
@return WAL Entry Filter Chain to use on WAL files filtering *out* WALEntry edits.
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSource.java