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From "Claudio Martella (JIRA)" <>
Subject [jira] [Commented] (GIRAPH-459) Group Vertex Mutations by Partition ID
Date Thu, 03 Jan 2013 23:48:13 GMT


Claudio Martella commented on GIRAPH-459:

1) I thought coding style wanted +4 spaces when completing a statement on the new line
2) Actually it is probably my reasoning, as mutations aren't partitioned and messages are,
hence I use first the partitioning on the data that needs it. I guess ;)
3) Good point, thanks
4) Will do
5) Will do
> Group Vertex Mutations by Partition ID
> --------------------------------------
>                 Key: GIRAPH-459
>                 URL:
>             Project: Giraph
>          Issue Type: Improvement
>          Components: graph
>            Reporter: 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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