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From "Maja Kabiljo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GIRAPH-1085) Add InMemoryDataAccessor
Date Wed, 06 Jul 2016 22:00:12 GMT

    [ https://issues.apache.org/jira/browse/GIRAPH-1085?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15365188#comment-15365188
] 

Maja Kabiljo commented on GIRAPH-1085:
--------------------------------------

https://reviews.facebook.net/D60435

> Add InMemoryDataAccessor
> ------------------------
>
>                 Key: GIRAPH-1085
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-1085
>             Project: Giraph
>          Issue Type: New Feature
>            Reporter: Maja Kabiljo
>            Assignee: Maja Kabiljo
>
> When we deal with graphs which have a lot of vertices with very little total data associated
with them (values + edges) we start experiencing memory problems because of too many objects
created, since every vertex has multiple objects associated with it. To solve this problem,
we should have a serialized partition representation (current ByteArrayPartition just keeps
byte[] per vertex, not per partition). We can leverage the out-of-core infrastructure and
just add data accessor which won't be backed by disk but in memory buffers.



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