shikhasomani commented on a change in pull request #1447: Calcite-3335: Getting 
new parameter from model to set it in HTTP host…
URL: https://github.com/apache/calcite/pull/1447#discussion_r322928195
 
 

 ##########
 File path: 
elasticsearch/src/main/java/org/apache/calcite/adapter/elasticsearch/ElasticsearchSchemaFactory.java
 ##########
 @@ -56,15 +61,38 @@ public ElasticsearchSchemaFactory() {
 
     try {
       final String coordinatesString = (String) map.get("coordinates");
-      Preconditions.checkState(coordinatesString != null,
-          "'coordinates' is missing in configuration");
 
-      final Map<String, Integer> coordinates = 
mapper.readValue(coordinatesString,
-          new TypeReference<Map<String, Integer>>() { });
+      final String hostsString = (String) map.get("hosts");
 
-      // create client
-      final RestClient client = connect(coordinates);
+      List<HttpHost> hosts;
+
+      if (coordinatesString != null) {
 
 Review comment:
   Reduced two variables. 
   

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