private void checkBandwidthChangeAndResetThrottler() {
    long peerBandwidth = getCurrentBandwidth();
    if (peerBandwidth != currentBandwidth) {
      currentBandwidth = peerBandwidth;
      throttler.setBandwidth((double) currentBandwidth / 10.0);
      LOG.info("ReplicationSource : {} bandwidth throttling changed, currentBandWidth={}",
        replicationPeer.getId(), currentBandwidth);
    }
  }
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