Changes between Version 6 and Version 7 of PDAD_Applications


Ignore:
Timestamp:
Jan 14, 2010, 2:03:54 PM (14 years ago)
Author:
cristina.basescu
Comment:

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  • PDAD_Applications

    v6 v7  
    1414== !MapReduce ==
    1515
     16Making design choices for MapReduce is an intricate task. On the one hand, there are many decisions to be made, such as to have or not to have a Combiner (cuts down the amount of data transferred from the Mapper to the Reducer), a Partitioner (partitions the output of mappers per reducer), or even a CompressionCodec (compresses the intermediate outputs from mappers to reducers) or a Comparator to do a secondary sort before the reduce phase. On the other hand, complex combinations in specifying these extra features may lead to a too long development time, which is not worth it.
     17 
    1618TODO Claudiu for his apps
    1719
    1820== Pig ==
    1921
     22On the contrary to MapReduce, writing code in PigLatin is as straight forward as it can be
    2023TODO Claudiu for his apps
    2124