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From "Vasia Kalavri (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1536) GSoC project: Graph partitioning operators for Gelly
Date Mon, 09 Mar 2015 23:07:38 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14353834#comment-14353834

Vasia Kalavri commented on FLINK-1536:

Hi [~ayd],

can you please give me some details on what you mean by graph input method? Gelly represents
a Graph as a DataSet of Vertices and a DataSet of Edges. You can read on how we can create
a graph from files, collections or DataSets in the [Gelly guide|http://ci.apache.org/projects/flink/flink-docs-master/gelly_guide.html#graph-creation].

Let me know if you have questions!


> GSoC project: Graph partitioning operators for Gelly
> ----------------------------------------------------
>                 Key: FLINK-1536
>                 URL: https://issues.apache.org/jira/browse/FLINK-1536
>             Project: Flink
>          Issue Type: New Feature
>          Components: Gelly, Java API
>            Reporter: Vasia Kalavri
>            Priority: Minor
>              Labels: graph, gsoc2015, java
> Smart graph partitioning can significantly improve the performance and scalability of
graph analysis applications. Depending on the computation pattern, a graph partitioning algorithm
divides the graph into (maybe overlapping) subgraphs, optimizing some objective. For example,
if communication is performed across graph edges, one might want to minimize the edges that
cross from one partition to another.
> The problem of graph partitioning is a well studied problem and several algorithms have
been proposed in the literature. The goal of this project would be to choose a few existing
partitioning techniques and implement the corresponding graph partitioning operators for Gelly.
> Some related literature can be found [here| http://www.citeulike.org/user/vasiakalavri/tag/graph-partitioning].

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