Not able to connect using client.transport.sniff true on docker image

[Ashutosh_Tripathi]

Hi,
I have setup a docker container with following configuration

    version: '3'
services:
  odfe-node1:
    image: amazon/opendistro-for-elasticsearch:0.9.0
    container_name: odfe-node1
    environment:
      - cluster.name=odfe-cluster
      - bootstrap.memory_lock=true # along with the memlock settings below, disables swapping
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m" # minimum and maximum Java heap size, recommend setting both to 50% of system RAM
      - opendistro_security.disabled=true
      - node.data=false
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - odfe-data1:/usr/share/elasticsearch/data
    ports:
      - 9200:9200
      - 9300:9300
      - 9600:9600 # required for Performance Analyzer
    networks:
      - odfe-net
  odfe-node2:
    image: amazon/opendistro-for-elasticsearch:0.9.0
    container_name: odfe-node2
    environment:
      - cluster.name=odfe-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
      - discovery.zen.ping.unicast.hosts=odfe-node1
      - opendistro_security.disabled=true
      - node.master=false
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - odfe-data2:/usr/share/elasticsearch/data
    networks:
      - odfe-net

volumes:
  odfe-data1:
  odfe-data2:

networks:
  odfe-net:

I am initializing the transport client with following settings:

    Settings settings = Settings.builder().put("cluster.name", "odfe-cluster").put("client.transport.sniff ", true).build();
    client = new PreBuiltTransportClient(settings);
    client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"), 9300));

But I am not able to connect using transport client. However I am able to connect if I set client.transport.sniff = false

In my cluster, there is one master & one data node for local testing.

Below is exception I am getting with sniff value = true

Exception in thread "main" NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{GlvWSFNlTuOqFaQUQYF1Nw}{localhost}{127.0.0.1:9300}]]
	at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:352)
	at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:248)
	at org.elasticsearch.client.transport.TransportProxyClient.execute(TransportProxyClient.java:60)
	at org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:388)
	at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:403)
	at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:391)
	at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:46)
	at org.elasticsearch.action.ActionRequestBuilder.get(ActionRequestBuilder.java:53)
	at zeus.catt.util.Test.main(Test.java:71)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

Transport client version "org.elasticsearch.client" % "transport" % "6.8.1",

Can someone help me in resolving it as I spent days with this issue.