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https://issues.apache.org/jira/browse/HAMA-580?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13281411#comment-13281411
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Thomas Jungblut commented on HAMA-580:
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Great to hear, hopefully this issue will not destroy your cluster ;)
Basically we can simply write the ID and VALUE of a vertex directly, but they
must meet the requirement that the client and the task has the classes
available to deserialize.
So for example for Pagerank:
Text/DoubleWritable (this can be null though) as vertex serialization and
ArrayWritable its just Text/NullWritable.
VertexArrayWritable is very verbose as well and I can rewrite it.
I would solve this like in GraphJobRunner is dealing with the vertex messages,
by setting the classes statically and then just reading them back.
Sorry for that problem, but I just wanted to make it run when coding the
generics for the graph package.
> Improve input of graph module
> -----------------------------
>
> Key: HAMA-580
> URL: https://issues.apache.org/jira/browse/HAMA-580
> Project: Hama
> Issue Type: Improvement
> Components: graph
> Affects Versions: 0.5.0
> Reporter: Thomas Jungblut
> Assignee: Thomas Jungblut
> Fix For: 0.5.0
>
>
> Currently it is too verbose, the wikipedia dataset is going to be bloated
> from 0.95gb to 5gb just because it is writing the classes x-times.
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