* Make a subdirectory in each node's node data location.
* @param directory
*/
private void makeNodeDataLocationDirectories(String directory) {
ExportRequest exportRequest = new ExportRequest();
exportRequest.source("{\"output_file\": \"" + directory + "\", \"fields\": [\"_source\", \"_id\", \"_index\", \"_type\"], \"force_overwrite\": true, \"explain\": true}");
ExportResponse explain = esSetup.client().execute(ExportAction.INSTANCE, exportRequest).actionGet();
try {
Map<String, Object> res = toMap(explain);
List<Map<String, String>> list = (ArrayList<Map<String, String>>) res.get("exports");