[TEZ-3630] Tez UI: Use DAG status for controlling auto-refresh polling.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.9.0
• Target Version/s: 0.9.0
• Assignee: Sreenath Somarajapuram
• Reporter: Sreenath Somarajapuram
• Created: 19/Feb/17 10:52
• Updated: 22/Aug/17 00:02
• Resolved: 23/Feb/17 19:03

Description

Issue: UI throws error on trying to access details of a SUCCEEDED DAG in a RUNNING app.

Cause: Right now we depend on app status to control polling, and its not mandatory for the AM to have details about non-running DAGs run under it. Hence error is thrown on polling AM for old DAG details.

Note:

• Current implementation uses app status as it considers a possible case where DAG could move to SUCCEEDED state and then go back to RUNNING.
• It also presumed the AM to have data about all DAGs run under it.