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Posted to mapreduce-user@hadoop.apache.org by unmesha sreeveni <un...@gmail.com> on 2014/01/17 04:47:16 UTC

Combination of MapReduce and Hive

Hi
   Can we use a cobination of Hive and MapReduce
Say: I am having a csv file. Ineed to find the mean of a column and replace
the null data with the mean(replace null with mean)
so whether we can write a hive query in driver (to find the mean) then
write a mapreduce block to replace the null with mean.

Which is better way
1. writing only mapreduce code or
2. Use a combination of hive and mapreduce.

-- 
*Thanks & Regards*

Unmesha Sreeveni U.B
Junior Developer

http://www.unmeshasreeveni.blogspot.in/