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Andra Lungu updated FLINK-2563: ------------------------------- Summary: Gelly's Graph Algorithm Interface is limited (was: Gelly's Graph Algorithm Interface is limites) > Gelly's Graph Algorithm Interface is limited > -------------------------------------------- > > Key: FLINK-2563 > URL: https://issues.apache.org/jira/browse/FLINK-2563 > Project: Flink > Issue Type: Improvement > Components: Gelly > Affects Versions: 0.9, 0.10 > Reporter: Andra Lungu > > Right now, Gelly's `GraphAlgorithm` interface only allows users/devs to > return the same type of Graph. > public Graph<K, VV, EV> run(Graph<K, VV, EV> input) throws Exception; > In numerous cases, one needs to return a single value, or a modified graph. > Off the top of my head, say one would like to implement a Triangle Count > library method. That takes as input a Graph and returns the total number of > triangles. > https://github.com/andralungu/gelly-partitioning/blob/master/src/main/java/example/GSATriangleCount.java > With the current Gelly abstractions, something like this cannot be supported. > Also if I initially had a Graph of Long, Long, NullValue and my algorithm > changed the edge values to type Double, for instance, I would again have > created an implementation which is not supported. -- This message was sent by Atlassian JIRA (v6.3.4#6332)