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Date: Thu, 9 Feb 2012 09:20:59 +0000 (UTC)
From: "Edward J. Yoon (Updated) (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (HAMA-502) Message API Improvement
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     [ https://issues.apache.org/jira/browse/HAMA-502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Edward J. Yoon updated HAMA-502:
--------------------------------

    Attachment: generic.patch

attach my rough test patch.
                
> Message API Improvement
> -----------------------
>
>                 Key: HAMA-502
>                 URL: https://issues.apache.org/jira/browse/HAMA-502
>             Project: Hama
>          Issue Type: Improvement
>          Components: bsp
>    Affects Versions: 0.4.0
>            Reporter: Thomas Jungblut
>            Assignee: Edward J. Yoon
>              Labels: newbie
>             Fix For: 0.5.0
>
>         Attachments: generic.patch
>
>
> Accordingly what we have discussed on the mailing list, we want to switch the API from the restricted BSPMessage type to <? extends Writable>.
> So send is going to look like this:
> bq. public final void send(String peerName, <? extends Writable> msg)
> And receive:
> bq. public final <? extends Writable> getCurrentMessage()
> There should be no backward compatibility issues because BSPMessage is currently a "child" of Writable.
> All the related class are:
> Interface: BSPPeer, MessageManager
> Class: BSPPeerImpl, HadoopMessageManagerImpl
> Maybe other class like BSPMessageBundle must be widened to use <? extends Writable>.

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