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Date: Tue, 8 Jan 2013 08:37:23 +0530
Message-ID: 
 <CANiuQZeeE_6NLF3ua7ruWTaGMwh2F5kM7yaT0d2T8hN6ZrBF-A@mail.gmail.com>
Subject: Re: Differences between 'mapped' and 'mapreduce' packages
From: Mahesh Balija <balijamahesh.mca@gmail.com>
To: user@hadoop.apache.org
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Hi Oleg,

         Mapreduce 0.20.* api has the support for both 0.19 api (which is
MapRed package in which your mapper should extend MRBase and implements
Mapper) and it has the new api as well (which is MapReduce packages where
you directly extend Mapper).

         As there are significant changes in 20 api may be for backward
compatibility mapred package is still in existence.
         There are few classes which exist in 19 api and those are not
supported in 0.20.* version.

Best,
Mahesh Balija,
Calsoft Labs.

On Mon, Jan 7, 2013 at 11:44 PM, Oleg Zhurakousky <
oleg.zhurakousky@gmail.com> wrote:

> What is the differences between the two?
> It seems like MR job could be configured using one of the other (e.g,
> "extends MapReduceBase implements Mapper" of "extends Mapper")
>
> Cheers
> Oleg

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Hi Oleg,<br><br>=A0=A0=A0=A0=A0=A0=A0=A0 Mapreduce 0.20.* api has the suppo=
rt for both 0.19 api (which is MapRed package in which your mapper should e=
xtend MRBase and implements Mapper) and it has the new api as well (which i=
s MapReduce packages where you directly extend Mapper).<br>
=A0<br>=A0=A0=A0=A0=A0=A0=A0=A0 As there are significant changes in 20 api =
may be for backward compatibility mapred package is still in existence.<br>=
=A0=A0=A0=A0=A0=A0=A0=A0 There are few classes which exist in 19 api and th=
ose are not supported in 0.20.* version.<br>
<br>Best,<br>Mahesh Balija,<br>Calsoft Labs.<br><br><div class=3D"gmail_quo=
te">On Mon, Jan 7, 2013 at 11:44 PM, Oleg Zhurakousky <span dir=3D"ltr">&lt=
;<a href=3D"mailto:oleg.zhurakousky@gmail.com" target=3D"_blank">oleg.zhura=
kousky@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">What is the differences between the two?<br>
It seems like MR job could be configured using one of the other (e.g, &quot=
;extends MapReduceBase implements Mapper&quot; of &quot;extends Mapper&quot=
;)<br>
<br>
Cheers<br>
<span class=3D"HOEnZb"><font color=3D"#888888">Oleg</font></span></blockquo=
te></div><br>

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