Comments on: MapReduce in C# using LINQ http://codecube.net/2009/02/mapreduce-in-c-using-linq/ Joel Martinez' weblog Thu, 29 Jul 2010 09:05:01 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Joel Martinez http://codecube.net/2009/02/mapreduce-in-c-using-linq/comment-page-1/#comment-888 Joel Martinez Thu, 31 Dec 2009 20:13:42 +0000 http://codecube.net/2009/02/mapreduce-in-c-using-linq/#comment-888 yes, you are right that distributed is more than multiple core. However, the point of the article wasn't to comment on the distributed nature of the popular mapreduce implementations, but to "map" linq operations into the mapreduce paradigm. Map/Reduce is not inherently distributed anyways, that was just google's implementation :-) yes, you are right that distributed is more than multiple core. However, the point of the article wasn’t to comment on the distributed nature of the popular mapreduce implementations, but to “map” linq operations into the mapreduce paradigm. Map/Reduce is not inherently distributed anyways, that was just google’s implementation :-)

]]> By: Maxi http://codecube.net/2009/02/mapreduce-in-c-using-linq/comment-page-1/#comment-884 Maxi Mon, 28 Dec 2009 03:47:34 +0000 http://codecube.net/2009/02/mapreduce-in-c-using-linq/#comment-884 I think Linq still has a long way to go to match with MapReduce. I don't think distributed simply means multi-cores but multi-machines. I am currently using Linq and try to make it distributed, but its strong connection state will gets in your way since your result set are not independent. I think MapReduce ideas is not only the syntax but the whole architecture. I think Linq still has a long way to go to match with MapReduce.
I don’t think distributed simply means multi-cores but multi-machines.
I am currently using Linq and try to make it distributed, but its strong connection state will gets in your way since your result set are not independent. I think MapReduce ideas is not only the syntax but the whole architecture.

]]> By: George Tsiokos http://codecube.net/2009/02/mapreduce-in-c-using-linq/comment-page-1/#comment-626 George Tsiokos Fri, 27 Feb 2009 15:55:50 +0000 http://codecube.net/2009/02/mapreduce-in-c-using-linq/#comment-626 Here's another implementation: DryadLINQ "the following line of code is a complete implementation of the Map-Reduce computation framework in DryadLINQ: public static IQueryable MapReduce(this IQueryable source, Expression> mapper, Expression> keySelector, Expression, TResult>> reducer) { return source.SelectMany(mapper).GroupBy(keySelector).Select(reducer); } " http://research.microsoft.com/en-us/projects/dryadlinq/default.aspx I hope they bring this to Azure... Here’s another implementation:

DryadLINQ
“the following line of code is a complete implementation of the Map-Reduce computation framework in DryadLINQ: public static IQueryable MapReduce(this IQueryable source, Expression> mapper, Expression> keySelector, Expression, TResult>> reducer) { return source.SelectMany(mapper).GroupBy(keySelector).Select(reducer); } ”

http://research.microsoft.com/en-us/projects/dryadlinq/default.aspx

I hope they bring this to Azure…

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