[FLINK-5161] accepting NullValue for VV in Gelly examples and GSA

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 1.1.3
• Component/s: Library / Graph Processing
• Assignee: Unassigned
• Reporter: wouter ligtenberg
• Created: 25/Nov/16 11:56
• Updated: 25/Nov/16 12:18
• Resolved: 25/Nov/16 12:18

Description

I made this topic a few days ago about EV, i meant VV back then, i don't know why i suddenly thought about EV and it confused myself.

In this gelly example [1] and this GSA algorithm [2] a Vertex Value of Double is required but never used, wouldn't it be better to change this into a NullValue? I create a lot of data without Vertex Values and it seems to me that it's more efficient

I'd like to hear your thoughts on this
[1] https://github.com/apache/flink/blob/master/flink-libraries/flink-gelly-examples/src/main/java/org/apache/flink/graph/examples/SingleSourceShortestPaths.java
[2] https://github.com/apache/flink/blob/master/flink-libraries/flink-gelly/src/main/java/org/apache/flink/graph/library/GSASingleSourceShortestPaths.java