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From "real great.." <greatness.hardn...@gmail.com>
Subject Re: easiest way to install hadoop
Date Wed, 23 Feb 2011 13:01:46 GMT
Thanks a lot..

On Wed, Feb 23, 2011 at 3:12 PM, Eric <eric.xkcd@gmail.com> wrote:

> Cloudera offers a nice distribution and decent documentation of how to
> install.
> When you get started, start using the "old", deprecated API as others have
> pointed out before. It's most complete and most stable for now.
>
> 2011/2/23 MONTMORY Alain <alain.montmory@thalesgroup.com>
>
>  Hi,
>>
>>
>>
>> For my point of view it is not a trivial question…
>>
>>
>>
>> The latest "stable release" is 0.20.2 (embedded in cloudera  CH3) (and not
>> 0.21)…
>>
>> When you start with hadoop recently (end 2010 for me) you are facing "old
>> API" depreceated, so you start with using new API…
>>
>> But in 0.20.2 not all the new API are available under mapreduce (example
>> MultipleInput is not available), so you try 0.21 version where it is
>> available…
>>
>> But the 0.21 seems for me not very stable (we are facing a "null pointer
>> exeception" in framework logs without any idea to solve it), so we scope
>> down to 0.20.2 and we are using "Old API".
>>
>>
>>
>> search " Re: Which version to choose" in the mailing list and follow the
>> advice of Todd Lipton.
>>
>> The "old API" are not so depreceated, they will be supported for years
>> because there is thousand jobs running on them. The "new API" could be used
>> when a stable release will be up (0.22, 0.23..).
>>
>>
>>
>> It is the feeback of my personal experience where i lost time trying to
>> use the latest 0.21 version… Since i use cloudera 0.20.2+320 with old API
>> and i don't have any problem (we are also using Cascading to simplify MR
>> writting with very little overhead on performance (6%) versus native hadoop
>> MR jobs. Overall we gain 4,65 factor versus traditionnal RDBMS approach….
>>
>>
>>
>> Hopes this help you,
>>
>>
>>
>> regards
>>
>>
>>
>> Alain
>>
>> [@@THALES GROUP RESTRICTED@@]
>>
>>
>>
>> *De :* real great.. [mailto:greatness.hardness@gmail.com]
>> *Envoyé :* mercredi 23 février 2011 04:42
>> *À :* mapreduce-user@hadoop.apache.org
>> *Objet :* easiest way to install hadoop
>>
>>
>>
>> Hi,
>> Very trivial question.
>> Which is the easiest way to install hadoop?
>> i mean which distribution should i go for?? apache or cloudera?
>> n which is the easiest os for hadoop?
>>
>> --
>> Regards,
>> R.V.
>>
>
>


-- 
Regards,
R.V.

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