Revert "AMBARI-25573 Ambari Metrics save as JSON/CSV use custom fileName instead of default name. (#3247)"

This reverts commit 0475c203c1c5b16dfe5b1de4d2715af121c479d2.
diff --git a/ambari-web/app/mixins/common/widgets/export_metrics_mixin.js b/ambari-web/app/mixins/common/widgets/export_metrics_mixin.js
index 00ba552..aa4f77c 100644
--- a/ambari-web/app/mixins/common/widgets/export_metrics_mixin.js
+++ b/ambari-web/app/mixins/common/widgets/export_metrics_mixin.js
@@ -63,20 +63,14 @@
     });
   },
 
-  getCustomFileName: function () {
-    return this.get('targetView').title.replace(/\s+/g, '_').toLowerCase();
-  },
-
   exportGraphDataSuccessCallback: function (response, request, params) {
     var seriesData = this.get('targetView').getData(response);
     if (!seriesData.length) {
       App.showAlertPopup(Em.I18n.t('graphs.noData.title'), Em.I18n.t('graphs.noData.tooltip.title'));
     } else {
       var fileType = params.isCSV ? 'csv' : 'json',
-          fileName = (Em.isEmpty(this.get('targetView') || Em.isEmpty(this.get('targetView').title)) ?
-          'data' : this.getCustomFileName()) + '.' + fileType,
-          data = params.isCSV ? this.prepareCSV(seriesData) : JSON.stringify(seriesData, this.jsonReplacer(), 4);
-
+        fileName = 'data.' + fileType,
+        data = params.isCSV ? this.prepareCSV(seriesData) : JSON.stringify(seriesData, this.jsonReplacer(), 4);
       fileUtils.downloadTextFile(data, fileType, fileName);
     }
   },
diff --git a/ambari-web/app/views/common/widget/graph_widget_view.js b/ambari-web/app/views/common/widget/graph_widget_view.js
index c1b7020..324358e 100644
--- a/ambari-web/app/views/common/widget/graph_widget_view.js
+++ b/ambari-web/app/views/common/widget/graph_widget_view.js
@@ -364,28 +364,21 @@
     }.observes('parentView.data')
   }),
 
-    getCustomFileName: function () {
-        // get current service name if it exists.
-        var currentServiceName = Em.isEmpty(this.get('controller.content.serviceName')) ? "" : this.get('controller.content.serviceName') + '_';
-        // serviceName_widgetName_metricName
-        return (currentServiceName + this.get('content.widgetName').replace(/\s+/g, '_')).toLowerCase();
-    },
-
-    exportGraphData: function (event) {
-        this.set('isExportMenuHidden', true);
-        var data,
-            isCSV = !!event.context,
-            fileType = isCSV ? 'csv' : 'json',
-            fileName = (Em.isEmpty(this.get('content.widgetName')) ? 'data' : this.getCustomFileName()) + '.' + fileType,
-            metrics = this.get('data'),
-            hasData = Em.isArray(metrics) && metrics.some(function (item) {
-                return Em.isArray(item.data);
-            });
-        if (hasData) {
-            data = isCSV ? this.prepareCSV(metrics) : JSON.stringify(metrics, this.jsonReplacer(), 4);
-            fileUtils.downloadTextFile(data, fileType, fileName);
-        } else {
-            App.showAlertPopup(Em.I18n.t('graphs.noData.title'), Em.I18n.t('graphs.noData.tooltip.title'));
-        }
+  exportGraphData: function (event) {
+    this.set('isExportMenuHidden', true);
+    var data,
+      isCSV = !!event.context,
+      fileType = isCSV ? 'csv' : 'json',
+      fileName = 'data.' + fileType,
+      metrics = this.get('data'),
+      hasData = Em.isArray(metrics) && metrics.some(function (item) {
+        return Em.isArray(item.data);
+      });
+    if (hasData) {
+      data = isCSV ? this.prepareCSV(metrics) : JSON.stringify(metrics, this.jsonReplacer(), 4);
+      fileUtils.downloadTextFile(data, fileType, fileName);
+    } else {
+      App.showAlertPopup(Em.I18n.t('graphs.noData.title'), Em.I18n.t('graphs.noData.tooltip.title'));
     }
+  }
 });
diff --git a/ambari-web/test/views/common/widget/graph_widget_view_test.js b/ambari-web/test/views/common/widget/graph_widget_view_test.js
index 5a12cd1..3a35fd8 100644
--- a/ambari-web/test/views/common/widget/graph_widget_view_test.js
+++ b/ambari-web/test/views/common/widget/graph_widget_view_test.js
@@ -815,4 +815,4 @@
     //  });
     //});
   });
-});
+});
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