@Override
  public CompletableFuture<List<ReplicationPeerDescription>> listReplicationPeers(Pattern pattern) {
    Preconditions.checkNotNull(pattern,
      "pattern is null. If you don't specify a pattern, use listReplicationPeers() instead");
    return listReplicationPeers(RequestConverter.buildListReplicationPeersRequest(pattern));
  }
Compact the region at specific region server.
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java