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https://issues.apache.org/jira/browse/HAMA-704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13566257#comment-13566257
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Edward J. Yoon commented on HAMA-704:
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I'm thinking about external merge sort
http://en.wikipedia.org/wiki/External_sorting
> Optimization of memory usage during message processing
> ------------------------------------------------------
>
> Key: HAMA-704
> URL: https://issues.apache.org/jira/browse/HAMA-704
> Project: Hama
> Issue Type: Improvement
> Components: graph
> Reporter: Edward J. Yoon
> Assignee: Edward J. Yoon
> Priority: Critical
> Attachments: mytest.patch
>
>
> <vertex, message> map seems consume a lot of memory. We should figure out an
> efficient way to reduce memory.
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