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https://issues.apache.org/jira/browse/HAMA-535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13272606#comment-13272606
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Suraj Menon edited comment on HAMA-535 at 5/10/12 6:30 PM:
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Hi, Please check the link below for an outline of the solution that I want to
propose. The key difference here from the Hadoop MR is that since BSP Task can
communicate with each other, it can share the existent key distribution among
each other. We can have different strategies to choose which reducer to run on
what set of keys based on the key distribution that every peer gets. This is
handled in ReducerKeyDesignator.java.
https://github.com/ssmenon/hama/tree/master/hama-mapreduce/src/org/apache/hama/computemodel/mapreduce
Disclaimer: The code is incomplete and not tested. The code is written only to
outline the solution.
I will be testing it for small set of data, before we get into spilling and
merging.
was (Author: surajsmenon):
Hi, Please check the link below for an outline of the solution that I want
to propose. The key difference here from the Hadoop MR is that since BSP Task
can communicate with each other, it can share the existent key distribution
among each other. We can have different strategies to choose which reducer to
run on what set of keys based on the key distribution that every peer gets.
This is handled in ReducerKeyDesignator.java.
https://github.com/ssmenon/hama/tree/master/hama-mapreduce/src/org/apache/hama/computemodel/mapreduce
> Implement MapReduce in BSP
> --------------------------
>
> Key: HAMA-535
> URL: https://issues.apache.org/jira/browse/HAMA-535
> Project: Hama
> Issue Type: New Feature
> Components: examples
> Reporter: Thomas Jungblut
> Assignee: Suraj Menon
>
> Suraj had the idea of implementing MapReduce on top of Apache Hama.
> This is generally possible because BSP is a generalization to MapReduce.
> We should just make up a simple API compatible version to Hadoop and put it
> into our example module.
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