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https://issues.apache.org/jira/browse/GIRAPH-248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13414021#comment-13414021
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Sean Choi commented on GIRAPH-248:
----------------------------------
A use case for IdentityVertex is to submit a job using
SimpleLongDoubleDoubleDoubleIdentityVertex.
I have used lib.LongDoubleDoubleAdjacencyListVertexInputFormat and an arbitrary
output format to check that my inputs have been read correctly and is outputted
corrected with the right edge and vertex value assignments.
> Generic IdentityVertex for IO testing
> -------------------------------------
>
> Key: GIRAPH-248
> URL: https://issues.apache.org/jira/browse/GIRAPH-248
> Project: Giraph
> Issue Type: Improvement
> Affects Versions: 0.2.0
> Reporter: Sean Choi
> Priority: Trivial
> Fix For: 0.2.0
>
> Attachments: GIRAPH-248-1.patch
>
>
> There seems to be no vertex that allows you to simply print what is given as
> input.
> I suggest creating an IdentityVertex that takes an input and outputs the
> vertex, vertex value and edge information to verify that the inputformat is
> working correctly.
> I will post a patch up pretty soon
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