Dear Varun Gupta, Most of parts of Input/OutputFormat of angrapa are similar to Input/OutputFormat of Hadoop, but those of angrapa must provide random access to some data record by a given id. If Input/OutputFormat do so, each cluster node can walk on graph data according to visiting strategies for graphs. This point will distinguish the angrapa from MapReduce. If Jira works well, I will post the issue about that.
Best regards, -- Hyunsik Choi Database & Information Systems Group, Korea University http://diveintodata.org On Wed, Sep 30, 2009 at 7:22 PM, Varun Gupta <[email protected]>wrote: > I feel we should plan out some concrete things to be implemented under > Angrapa so that other people/communities start using it. > > For example: > I am in Mahout Dev community and we have had discussions of using Hama but > we always ended in downplaying the idea because Hama does not have a > concrete library and road map. > > Tasks like http://issues.apache.org/jira/browse/HAMA-163 can be tackled > first to have a basic library up soon. > > Can we also discuss interface for Input/Output formatter? > > I Remain, > Varun Gupta > > > On Wed, Sep 30, 2009 at 12:26 PM, Edward J. Yoon <[email protected] > >wrote: > > > Hello, > > > > > I can take up work on Angrapa and therefore would like know if you guys > > have > > > explored existing Graph libraries to have a threshold to build on. > > > > Not yet. BTW, Since it's the graph computing framework, which is based > > on graph traversal as a M/R program based on sequential scan, It would > > be nice to have a basic library for graph data structures such as, > > Input/Output formatter, Hbase graph storage, .., etc. (At this stage, > > some library for graph algorithms is not our plan, except some > > examples) > > > > > If we are up to creating our own base classes (basic graph class and > > likes), > > > I will start by creating JIRA tasks and and then submitting code. > > > > Great. Please feel free to contribute. > > > > Plus, In google code project, there is our prototype implementation -- > > http://code.google.com/p/throb/source/checkout > > > > On Wed, Sep 30, 2009 at 3:13 PM, Varun Gupta <[email protected]> > > wrote: > > > I can take up work on Angrapa and therefore would like know if you guys > > have > > > explored existing Graph libraries to have a threshold to build on. > > > > > > If we are up to creating our own base classes (basic graph class and > > likes), > > > I will start by creating JIRA tasks and and then submitting code. > > > > > > I Remain, > > > Varun Gupta > > > > > > > > > > > -- > > Best Regards, Edward J. Yoon @ NHN, corp. > > [email protected] > > http://blog.udanax.org > > >
