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From Ronald Petty <ronald.pe...@gmail.com>
Subject Re: map/reduce by C# & Hadoop
Date Wed, 28 Dec 2011 01:25:43 GMT

Can you be a little more concrete on why streaming will not work for you?


Kindest regards.


On Tue, Dec 27, 2011 at 8:17 PM, Masoud <masoud@agape.hanyang.ac.kr> wrote:

> Thank for your reply^^
> but question is how we can write map reduce in C# without using Java
> abstract classes and interfaces of Hadoop, should we only
> write C# code according to map/reduce app logic?
> what do you mean of app can run standalone? you mean its should be .exe or
> .dll?
> did you do  map/reduce by C# & Hadoop before?
> Oh, lot of question. sorry ...
> B.S
> On 12/27/2011 06:13 PM, Harsh J wrote:
>> I haven't used Mono but if your written program can run as a standalone
>> and read from stdin and write to stdout, then streaming is sufficient to
>> run your C# MR programs.
>> On 27-Dec-2011, at 2:31 PM, Masoud wrote:
>>  Dear All,
>>> any one did it before: map/reduce by C#&  Hadoop ???
>>> As you know for developing map/reduce app in hadoop we should extend and
>>> implement special map and reduce abstract classes and interfaces,
>>> and Hadoop pipes is for C++ not C#. The question is what we should do
>>> for C#?
>>> 1- Just develop our C# code (maybe its better with MonoDevelop)
>>> according to map/reduce abstract logic by developing map and reduce classes
>>> 2- Then introduce the map and reduce classes to the hadoop streaming.
>>> Does hadoop streaming work with .ddl file?
>>> Thanks for your help.

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