[SPARK-7628] DAG visualization: position graphs with semantic awareness

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 1.4.0
• Component/s: Web UI
• Assignee: Andrew Or
• Reporter: Andrew Or
• Created: 14/May/15 04:20
• Updated: 18/Nov/15 22:33
• Resolved: 18/Nov/15 22:33

Description

Many streaming operations aggregate over many batches. The current layout puts the aggregation stage at the end, resulting in many overlapping edges that together form a piece of beautiful artwork but nevertheless clutter the intended visualization.

One thing we could do is to put any stage that has N incoming edges on the next line rather than piling it up vertically on the right.