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From "Alessandro Presta (JIRA)" <>
Subject [jira] [Commented] (GIRAPH-459) Group Vertex Mutations by Partition ID
Date Fri, 04 Jan 2013 16:46:12 GMT


Alessandro Presta commented on GIRAPH-459:


(1) is no big deal, I just noticed an unrelated change and thought it was a mistake. If Checkstyle
doesn't complain, you may be right.

> Group Vertex Mutations by Partition ID
> --------------------------------------
>                 Key: GIRAPH-459
>                 URL:
>             Project: Giraph
>          Issue Type: Improvement
>          Components: graph
>            Reporter: Claudio Martella
>            Assignee: Claudio Martella
>         Attachments: GIRAPH-459.patch
> Currently, vertex mutations, and implicit creations of vertices based on messages to
non-existing vertices, are executed randomly partition-wise. The iterated vertices can belong
to different partitions. This is bad when we work out-of-core, as we need to load and unload
the whole partition for each vertex. We should group these operations per-partition, and batch-execute

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