Github user jburwell commented on a diff in the pull request:

    https://github.com/apache/cloudstack/pull/1371#discussion_r62780906
  
    --- Diff: server/src/com/cloud/network/NetworkServiceImpl.java ---
    @@ -2111,8 +2098,9 @@ public Network updateGuestNetwork(final long 
networkId, String name, String disp
                 }
             }
     
    -        final Map<String, String> newSvcProviders = networkOfferingChanged 
? _networkMgr.finalizeServicesAndProvidersForNetwork(
    -                _entityMgr.findById(NetworkOffering.class, 
networkOfferingId), network.getPhysicalNetworkId()) : new HashMap<String, 
String>();
    +        final Map<String, String> newSvcProviders = networkOfferingChanged
    +                ? 
_networkMgr.finalizeServicesAndProvidersForNetwork(_entityMgr.findById(NetworkOffering.class,
 networkOfferingId), network.getPhysicalNetworkId())
    +                : new HashMap<String, String>();
    --- End diff --
    
    Recognizing it is out of scope of this patch, but would it be possible to 
change ``new HashMap<String, String>()`` to ``Collections.emptyMap()`` to avoid 
unnecessary object creation when ``networkOfferingChanged`` is ``false``.


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