private URL getTaskListByVertexURL(String dagId, String vertexId) throws MalformedURLException {
      return new URL(_timelineWebAddr + "/TEZ_TASK_ID?primaryFilter=TEZ_DAG_ID:" + dagId +
              "&secondaryFilter=TEZ_VERTEX_ID:" + vertexId + "&limit=500000");
    }
Task level data mining for Tez Tasks from timeline server API
app/com/linkedin/drelephant/tez/fetchers/TezFetcher.java