quintinali commented on issue #17: SDAP-72
URL: 
https://github.com/apache/incubator-sdap-mudrod/pull/17#issuecomment-390074295
 
 
   @lewismc Yes, I still have issues with the try-with-resources. 
   
   If I create ESTransportClient using try-with-resources as follow, an error 
occurs.
   ```
       if (hosts != null && port > 1) {  
         try (TransportClient transportClient = new 
ESTransportClient(settings)) {
           for (String host : hosts){
             transportClient.addTransportAddress(new 
InetSocketTransportAddress(InetAddress.getByName(host), port));
           }
           client = transportClient;
         }
       } else if (clusterName != null) {
         node = new Node(settings);
         client = node.client();
       }
   ```
   2018-05-17 22:17:02,276 ERROR main.MudrodEngine 
(MudrodEngine.java:main(398)) - Error whilst parsing command line.
   java.lang.IllegalStateException: transport client is closed
        at 
org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:240)
        at 
org.elasticsearch.client.transport.TransportProxyClient.execute(TransportProxyClient.java:59)
        at 
org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:356)
        at 
org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:403)
        at 
org.elasticsearch.client.support.AbstractClient$IndicesAdmin.execute(AbstractClient.java:1226)
        at 
org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:80)
        at 
org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:54)
        at org.apache.sdap.mudrod.driver.ESDriver.putMapping(ESDriver.java:142)
        at 
org.apache.sdap.mudrod.discoveryengine.MudrodAbstract.initMudrod(MudrodAbstract.java:84)
        at 
org.apache.sdap.mudrod.discoveryengine.MudrodAbstract.<init>(MudrodAbstract.java:56)
        at 
org.apache.sdap.mudrod.discoveryengine.DiscoveryEngineAbstract.<init>(DiscoveryEngineAbstract.java:29)
        at 
org.apache.sdap.mudrod.discoveryengine.WeblogDiscoveryEngine.<init>(WeblogDiscoveryEngine.java:50)
        at 
org.apache.sdap.mudrod.main.MudrodEngine.startFullIngest(MudrodEngine.java:242)
        at org.apache.sdap.mudrod.main.MudrodEngine.main(MudrodEngine.java:388)

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