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https://issues.apache.org/jira/browse/GIRAPH-548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13600315#comment-13600315
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Alessandro Presta commented on GIRAPH-548:
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Also, some VertexReader implementations can benefit from creating a VertexEdges
instance directly, initializing it with the known capacity. In that case,
whether the Edge object can be reused depends on whether the chosen VertexEdges
class implements ReuseObjectsVertexEdges.
> Reuse Edge objects in EdgeReader implementations
> ------------------------------------------------
>
> Key: GIRAPH-548
> URL: https://issues.apache.org/jira/browse/GIRAPH-548
> Project: Giraph
> Issue Type: Improvement
> Reporter: Alessandro Presta
> Assignee: Nitay Joffe
>
> Because read edges are serialized right away, we can actually reuse the same
> Edge object in each EdgeReader instance.
> This behavior is currently optional in the Hive input formats, but it doesn't
> need to. It can also be adopted in other formats (e.g.
> PseudoRandomEdgeInputFormat).
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