[TEZ-4171] DAGImp::getDAGStatus should try to report RUNNING state information correctly

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.0, 0.9.3
• Assignee: Rajesh Balamohan
• Reporter: Rajesh Balamohan
• Created: 06/May/20 08:12
• Updated: 16/May/20 15:42
• Resolved: 16/May/20 15:42

Description

https://github.com/apache/tez/blob/master/tez-dag/src/main/java/org/apache/tez/dag/app/dag/impl/DAGImpl.java#L593

 

https://github.com/apache/tez/blob/master/tez-dag/src/main/java/org/apache/tez/dag/app/dag/impl/DAGImpl.java#L953

 

It is possible that the state changed to "RUNNING" and signaling was done. However, if  getDAGStatus gets invoked later, it wouldn't receive any signal and ends up waiting until the timeout. For clients trying to report details on SUBMIT–>RUNNING, it ends up giving wrong picture.