windhamwong commented on pull request #3550:
URL: https://github.com/apache/incubator-heron/pull/3550#issuecomment-652193699


   Testing environment:
   namespace: heron
   No additional service added mannually.
   
   Tested with the example topology `ackingTopology`. I am still seeing the 
`acking-1` complaining about:
   
   File: metricsmgr-1.log.0
   ```
   [2020-07-01 05:05:02 +0000] [INFO] 
org.apache.heron.common.network.HeronClient: Connecting to endpoint: 
acking-0:6001
   [2020-07-01 05:05:02 +0000] [SEVERE] 
org.apache.heron.metricsmgr.sink.tmaster.TMasterSink: TMasterClient dies in 
thread: Thread[Thread-1117,5,main]
   java.nio.channels.UnresolvedAddressException
        at java.base/sun.nio.ch.Net.checkAddress(Net.java:130)
        at 
java.base/sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:675)
        at 
org.apache.heron.common.network.HeronClient.start(HeronClient.java:129)
        at 
org.apache.heron.metricsmgr.sink.tmaster.TMasterClient.run(TMasterClient.java:128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)
   ```
   
   and
   
   File: container_1_exclaim1_1.log.0
   ```
   [INFO] org.apache.heron.network.StreamManagerClient: Stop writing due to not 
yet connected to Stream Manager.
   ```
   
   
   It is still trying to resolve `acking-1` instead of 
`acking-1.acking.heron.svc.cluster.local` OR `acking1.acking`


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