[TEZ-1059] Generalize change in connected vertices when the parallelism of a vertex changes

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Assignee: Bikas Saha
• Reporter: Bikas Saha
• Created: 15/Apr/14 23:34
• Updated: 17/Apr/15 18:16
• Resolved: 17/Apr/15 18:16

Description

When a vertex changes its parallelism, consumer vertices may need to respond to it. 1-1 consumer vertices would need to change their parallelism to match. Scatter-gather consumers dont need to change.
Currently, the tez dag code has special cased this for 1-1 edge which is fine for now but does not work with custom edges.

Issue Links

• relates to: TEZ-2020 For 1-1 edge vertex configured event may be sent incorrectly