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https://issues.apache.org/jira/browse/HAMA-761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13680247#comment-13680247
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Edward J. Yoon commented on HAMA-761:
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I'll look at this tonight. If possible, let's fix this for Hama 0.6.2.
> Improvement for GraphJobMessage comparation operation
> -----------------------------------------------------
>
> Key: HAMA-761
> URL: https://issues.apache.org/jira/browse/HAMA-761
> Project: Hama
> Issue Type: Improvement
> Components: graph
> Affects Versions: 0.6.1
> Reporter: MaoYuan Xian
> Assignee: MaoYuan Xian
>
> Currently, GraphJobMessage comparation opertion depends on the default
> comparator (org.apache.hadoop.io.WritableComparator used), which has to read
> out all GraphJobMessage message (including vertexId and vertexValue) when
> does the comparation.
> Since lots of comparation operations happen in graph computing, this
> limitation makes a performance downgrade.
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