[FLINK-1632] Use DataSet's count() and collect() to simplify Gelly methods

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Implemented
• Affects Version/s: 0.9
• Fix Version/s: 0.9
• Component/s: Library / Graph Processing
• Labels: easyfix starter
• Assignee: Andra Lungu
• Reporter: Vasia Kalavri
• Created: 02/Mar/15 21:06
• Updated: 18/Mar/15 13:51
• Resolved: 18/Mar/15 13:51

Description

The recently introduced count() and collect() methods of DataSet can be used to simplify several Gelly methods. We can get rid of GraphUtils and also simplify methods which return DataSets with single values, such as numberOfVertices() and isWeaklyConnected().