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From "Hudson (JIRA)" <>
Subject [jira] [Commented] (GIRAPH-1085) Add InMemoryDataAccessor
Date Mon, 11 Jul 2016 17:31:11 GMT


Hudson commented on GIRAPH-1085:

FAILURE: Integrated in Giraph-trunk-Commit #1637 (See [])
GIRAPH-1085: Add InMemoryDataAccessor (majakabiljo: [])
* giraph-core/src/main/java/org/apache/giraph/ooc/data/
* giraph-core/src/main/java/org/apache/giraph/utils/io/
* giraph-core/src/main/java/org/apache/giraph/ooc/persistence/
* giraph-core/src/main/java/org/apache/giraph/ooc/persistence/

> Add InMemoryDataAccessor
> ------------------------
>                 Key: GIRAPH-1085
>                 URL:
>             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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