[ML][TEST] Refresh doc index in setup of test running df analytics

client/rest-high-level/src/test/java/org/elasticsearch/client/documentation/MlClientDocumentationIT.java

@@ -68,8 +68,6 @@ import org.elasticsearch.client.ml.GetDataFrameAnalyticsRequest;
 import org.elasticsearch.client.ml.GetDataFrameAnalyticsResponse;
 import org.elasticsearch.client.ml.GetDataFrameAnalyticsStatsRequest;
 import org.elasticsearch.client.ml.GetDataFrameAnalyticsStatsResponse;
-import org.elasticsearch.client.ml.GetModelSnapshotsRequest;
-import org.elasticsearch.client.ml.GetModelSnapshotsResponse;
 import org.elasticsearch.client.ml.GetDatafeedRequest;
 import org.elasticsearch.client.ml.GetDatafeedResponse;
 import org.elasticsearch.client.ml.GetDatafeedStatsRequest;
@@ -82,6 +80,8 @@ import org.elasticsearch.client.ml.GetJobRequest;
 import org.elasticsearch.client.ml.GetJobResponse;
 import org.elasticsearch.client.ml.GetJobStatsRequest;
 import org.elasticsearch.client.ml.GetJobStatsResponse;
+import org.elasticsearch.client.ml.GetModelSnapshotsRequest;
+import org.elasticsearch.client.ml.GetModelSnapshotsResponse;
 import org.elasticsearch.client.ml.GetOverallBucketsRequest;
 import org.elasticsearch.client.ml.GetOverallBucketsResponse;
 import org.elasticsearch.client.ml.GetRecordsRequest;
@@ -3046,7 +3046,8 @@ public class MlClientDocumentationIT extends ESRestHighLevelClientTestCase {
     public void testStartDataFrameAnalytics() throws Exception {
         createIndex(DF_ANALYTICS_CONFIG.getSource().getIndex());
         highLevelClient().index(
-            new IndexRequest(DF_ANALYTICS_CONFIG.getSource().getIndex()).source(XContentType.JSON, "total", 10000), RequestOptions.DEFAULT);
+            new IndexRequest(DF_ANALYTICS_CONFIG.getSource().getIndex()).source(XContentType.JSON, "total", 10000)
+                .setRefreshPolicy(WriteRequest.RefreshPolicy.IMMEDIATE), RequestOptions.DEFAULT);
         RestHighLevelClient client = highLevelClient();
         client.machineLearning().putDataFrameAnalytics(new PutDataFrameAnalyticsRequest(DF_ANALYTICS_CONFIG), RequestOptions.DEFAULT);
         {