Major Description
In Tez UI 0.7, DAG (vertex, app, task, attempt) context was shown in the document title. This was lost in the 0.9 UI migration. This jira attempts to bring that feature back. This feature is essential when supporting large clusters where a dev or support person may have dozens of dags open at the same time. Having context in the document title (the tab title), will allow us to quickly navigate.