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https://issues.apache.org/jira/browse/FLINK-6393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15989289#comment-15989289
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ASF GitHub Bot commented on FLINK-6393:
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Github user greghogan commented on the issue:

    https://github.com/apache/flink/pull/3788
  
    @fanzhidongyzby that sounds good except I would leave the `EmptyGraph` as 
it is. In addition we'll want to add the new generators as driver inputs in 
`flink-gelly-examples`, add to the list of inputs in `Runner`, and add a test 
each to `EdgeListITCase` (run the test to compute the checksum to create the 
test string).
    
    Also, on the graph name, without a reference to the literature, perhaps 
this could be something invoking the idea that vertices are connected by 
length-1 paths to "far" vertices, by length-2 paths to "near" vertices, by 
length-3 paths to "far" vertices, etc. Something like `EchoGraph`.


> Add Evenly Graph Generator to Flink Gelly
> -----------------------------------------
>
>                 Key: FLINK-6393
>                 URL: https://issues.apache.org/jira/browse/FLINK-6393
>             Project: Flink
>          Issue Type: New Feature
>          Components: Gelly
>            Reporter: FlorianFan
>            Assignee: FlorianFan
>            Priority: Minor
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> Evenly graph means every vertex in the graph has the same degree, so the 
> graph can be treated as evenly due to all the edges in the graph are 
> distributed evenly. when vertex degree is 0, an empty graph will be 
> generated. when vertex degree is vertex count - 1, complete graph will be 
> generated.



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