[FLINK-1975] Graph getUndirected improvement

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.9
• Fix Version/s: 0.9
• Component/s: Library / Graph Processing
• Labels: easyfix
• Assignee: Andra Lungu
• Reporter: Andra Lungu
• Created: 05/May/15 17:04
• Updated: 15/May/15 15:19
• Resolved: 15/May/15 15:19

Description

The current getUndirected method uses a union and a map to add the reverse edges to the graph. This could be done by simply using a flatMap that adds the edge and its reversed version - a flatMap is less expensive than a union followed by a map.