[jira] [Created] (FLINK-1975) Graph getUndirected improvement

[Shang Yuanchun (Jira)]

Andra Lungu created FLINK-1975:
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             Summary: Graph getUndirected improvement
                 Key: FLINK-1975
                 URL: https://issues.apache.org/jira/browse/FLINK-1975
             Project: Flink
          Issue Type: Improvement
          Components: Gelly
    Affects Versions: 0.9
            Reporter: Andra Lungu
            Assignee: Andra Lungu
            Priority: Minor


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.  



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