[jira] Updated: (HAMA-196) Design the input/output data types

["Hyunsik Choi (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HAMA-196?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyunsik Choi updated HAMA-196:
------------------------------

    Component/s: graph

Changed the assigned component.

> Design the input/output data types
> ----------------------------------
>
>                 Key: HAMA-196
>                 URL: https://issues.apache.org/jira/browse/HAMA-196
>             Project: Hama
>          Issue Type: New Feature
>          Components: graph
>            Reporter: Hyunsik Choi
>
> Like MapReduce, Angrapa also need input/output data types like key/value pairs of MapReduce. In Angrapa, programs will handle all of data as vertices, each of which has a key and an adjacent list. Thus, I think it would be good that a key is an array of bytes (i.e., byte [] ) and an adjacent list is keys. 
> In addition, most of graph algorithms focus on graph features and labels of either vertices or edges. They may not need keys. Therefore, RecordReader would need only VERTEX; that is RecordReader<VERTEX>.
> What do you think about?

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