[TEZ-646] Avoid creating multiple copies of the same Event payload

• Type: Sub-task
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 0.3.0
• Assignee: Siddharth Seth
• Reporter: Siddharth Seth
• Created: 26/Nov/13 18:58
• Updated: 01/Mar/14 04:19
• Resolved: 30/Jan/14 06:18

Description

OnFileSortedOutput generates the same event payload for all downstream tasks. As an example, for a simple MR job - the number of copies of this is equal to the number of reduce tasks.

This needs to be done in a clean manner though - since the event model is meant to generate a separate payload for each downstream task.