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https://issues.apache.org/jira/browse/FLINK-2141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14609712#comment-14609712
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ASF GitHub Bot commented on FLINK-2141:
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Github user andralungu commented on a diff in the pull request:
https://github.com/apache/flink/pull/877#discussion_r33657016
--- Diff: docs/libs/gelly_guide.md ---
@@ -693,6 +693,9 @@ Currently, the following parameters can be specified:
* <strong>Number of Vertices</strong>: Accessing the total number of
vertices within the iteration. This property can be set using the
`setOptNumVertices()` method.
The number of vertices can then be accessed in the gather, sum and/or
apply functions by using the `getNumberOfVertices()` method. If the option is
not set in the configuration, this method will return -1.
+* <strong>Neighbor Direction</strong>: By Default values are gathered from
the out neighbors of the Vertex. This can be modified
--- End diff --
default without capital D, set direction should be written without capital
s and in between inverted commas (i.e. `setDirection()`)
It would be nice to have an example in the docs, showing users how to play
with this option; check the number of vertices example for inspiration :)
> Allow GSA's Gather to perform this operation in more than one direction
> -----------------------------------------------------------------------
>
> Key: FLINK-2141
> URL: https://issues.apache.org/jira/browse/FLINK-2141
> Project: Flink
> Issue Type: New Feature
> Components: Gelly
> Affects Versions: 0.9
> Reporter: Andra Lungu
> Assignee: Shivani Ghatge
>
> For the time being, a vertex only gathers information from its in-edges.
> Similarly to the vertex-centric approach, we would like to allow users to
> gather data from out and all edges as well.
> This property should be set using a setDirection() method.
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