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Re: How to shuffle (Key,Value) pair from mapper to multiple reducer - HDFS - [mail # user]
...Emit (key, value) twice from mapper by modifying key as key' = (key, partId) and record becomes (key', value)   Regards, Ajay Srivastava   On 13-Mar-2013, at 2:29 PM, Vikas Jadhav ...
   Author: Ajay Srivastava, 2013-03-13, 09:10
Search results for pair from mapper to multiple reducer :
Re: How to shuffle (Key,Value) pair from mapper to multiple reducer - HDFS - [mail # user]
...Emit (key, value) twice from mapper by modifying key as key' = (key, partId) and record becomes (key', value)   Regards, Ajay Srivastava   On 13-Mar-2013, at 2:29 PM, Vikas Jadhav ...
   Author: Ajay Srivastava, 2013-03-13, 09:10
Re: How to balance reduce job - HDFS - [mail # user]
...Tariq probably meant distribution of keys from  pair emitted by mapper. Partitioner distributes these pairs to different reducers based on key. If data is such that keys are skewed then...
   Author: Ajay Srivastava, 2013-04-17, 06:02
Re: Cartesian product in hadoop - MapReduce - [mail # user]
...The approach which I proposed will have m+n i/o for reading datasets not the (m + n + m*n) and but further i/o due to spills and reading mapper output by reducer will be more as number of tu...
   Author: Ajay Srivastava, 2013-04-18, 15:18
Spilled records - MapReduce - [mail # user]
...Hi,  I was tuning mapred job to reduce number of spills and reached a stage where following numbers are same -  Spilled Records in map = Spilled records in reduce = Combine output ...
   Author: Ajay Srivastava, 2013-01-23, 10:34
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