ES - Support for min_doc_count on group by terms (#7324)

public/app/plugins/datasource/elasticsearch/bucket_agg.js

@@ -82,12 +82,17 @@ function (angular, _, queryDef) {
         case 'terms': {
           settings.order = settings.order || "asc";
           settings.size = settings.size || "10";
+          settings.min_doc_count = settings.min_doc_count || 0;
           settings.orderBy = settings.orderBy || "_term";
 
           if (settings.size !== '0') {
             settingsLinkText = queryDef.describeOrder(settings.order) + ' ' + settings.size + ', ';
           }
 
+          if (settings.min_doc_count > 0) {
+            settingsLinkText += 'Min Doc Count: ' + settings.min_doc_count + ', ';
+          }
+
           settingsLinkText += 'Order by: ' + queryDef.describeOrderBy(settings.orderBy, $scope.target);
 
           if (settings.size === '0') {

public/app/plugins/datasource/elasticsearch/partials/bucket_agg.html

@@ -61,6 +61,10 @@
 			<label class="gf-form-label width-10">Size</label>
 			<metric-segment-model property="agg.settings.size" options="sizeOptions" on-change="onChangeInternal()" css-class="width-12"></metric-segment-model>
 		</div>
+		<div class="gf-form offset-width-7">
+			<label class="gf-form-label width-10">Min Doc Count</label>
+			<input type="number" class="gf-form-input max-width-12" ng-model="agg.settings.min_doc_count" ng-blur="onChangeInternal()">
+		</div>
 		<div class="gf-form offset-width-7">
 			<label class="gf-form-label width-10">Order By</label>
 			<metric-segment-model property="agg.settings.orderBy" options="orderByOptions" on-change="onChangeInternal()" css-class="width-12"></metric-segment-model>

public/app/plugins/datasource/elasticsearch/query_builder.js

@@ -49,6 +49,10 @@ function (queryDef) {
       }
     }
 
+    if (aggDef.settings.min_doc_count !== void 0) {
+      queryNode.terms.min_doc_count = parseInt(aggDef.settings.min_doc_count, 10);
+    }
+
     if (aggDef.settings.missing) {
       queryNode.terms.missing = aggDef.settings.missing;
     }