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From "Edward J. Yoon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HAMA-774) CompositeInputFormat in Hama
Date Fri, 05 Jul 2013 07:33:48 GMT

    [ https://issues.apache.org/jira/browse/HAMA-774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13700501#comment-13700501
] 

Edward J. Yoon commented on HAMA-774:
-------------------------------------

+1 for adding CompositeInputFormat.

{quote} But currently I'm missing some integration into BSPPeerImpl {quote}

See BSPJobClient.submitJobInternal() method.

{code}
    // only create the splits if we have an input
    if (job.get("bsp.input.dir") != null) {
{code}

You'll need to add something like "else if job.get("bsp.join.expr") { // Sets the splits };"
                
> CompositeInputFormat in Hama
> ----------------------------
>
>                 Key: HAMA-774
>                 URL: https://issues.apache.org/jira/browse/HAMA-774
>             Project: Hama
>          Issue Type: New Feature
>          Components: bsp core
>    Affects Versions: 0.6.2
>            Reporter: Martin Illecker
>            Assignee: Martin Illecker
>            Priority: Minor
>             Fix For: 0.6.3
>
>         Attachments: HAMA-774.patch
>
>
> *Adapting Hadoop CompositeInputFormat to Hama.*
> Adapt the CompositeInputFormat from Hadoop and integrate it into Hama.
> e.g., Useful for matrix multiplication example by doing a inner join of two matrices.
> Therefore the Hadoop join package has been adapted within *org.apache.hama.bsp.join*.
> Finally I would need some help to integrate the CompositeInputFormat into Hama by using
> {code} 
> job.setInputFormat(CompositeInputFormat.class);
> job.set("bsp.join.expr", CompositeInputFormat.compose("inner",
>    SequenceFileInputFormat.class, aPath, bPath));
> {code}

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