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https://issues.apache.org/jira/browse/HAMA-732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573551#comment-13573551
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Suraj Menon commented on HAMA-732:
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I must admit, I had a very wrong notion about what DirectMemory does. I looked
into the code. Once we move our communication to Netty, we can use any
serializers we want. Does it have a ByteBuffer pool? We need it to budget/reuse
the use of off heap buffers.
> Investigate the usage of Apache DirectMemory to store vertices
> --------------------------------------------------------------
>
> Key: HAMA-732
> URL: https://issues.apache.org/jira/browse/HAMA-732
> Project: Hama
> Issue Type: Improvement
> Components: graph
> Affects Versions: 0.6.0
> Reporter: Tommaso Teofili
> Assignee: Tommaso Teofili
> Priority: Minor
> Fix For: 0.7.0
>
> Attachments: HAMA-732.patch
>
>
> Since Apache DirectMemory can keep objects outside of the java heap that
> could help on improving performances.
> I created a simple extension implementation of VerticesInfo which uses Apache
> DirectMemory CacheService instead of a List, performance seem to be improved.
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