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From "Bejoy KS" <bejoy.had...@gmail.com>
Subject Re: Map-Reduce V/S Hadoop Ecosystem
Date Wed, 07 Nov 2012 18:24:52 GMT
Hi Yogesh,

The development time in Pig and hive are pretty less compared to its equivalent mapreduce
code and for generic cases it is very efficient. 
If your requirement is that complex and you need very low level control of your code mapreduce
is better. If you are an expert in mapreduce your code can be efficient as yours would very
specific to your app but the MR in hive and pig may be more generic.

To just write your custom mapreduce functions, just basic knowledge on java is good. As you
are better with java you can understand the internals better.


Regards
Bejoy KS

Sent from handheld, please excuse typos.

-----Original Message-----
From: <yogesh.kumar13@wipro.com>
Date: Wed, 7 Nov 2012 15:33:07 
To: <user@hadoop.apache.org>
Reply-To: user@hadoop.apache.org
Subject: Map-Reduce V/S Hadoop Ecosystem

Hello Hadoop Champs,

Please give some suggestion..

As Hadoop Ecosystem(Hive, Pig...) internally do Map-Reduce to process.

My Question is

1). where Map-Reduce program(written in Java, python etc) are overtaking Hadoop Ecosystem.

2). Limitations of Hadoop Ecosystem comparing with Writing Map-Reduce program.

3) for writing Map-Reduce jobs in java how much we need to have skills in java out of 10 (?/10)


Please put some light over it.


Thanks & Regards
Yogesh Kumar


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