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  • #1924
    somu s

    1. how hadoop transaction is different form orcle transaction and also how read and write anotomy of hdfs is different from oracle databases ?

    2. how to transfer data from one datanode to another datanode ?

    3. how nodes communicate each other ?

    4.what is logical split ?

    5.if datanode goes down how the blocks of that data node shift to another active datanode ?

    6.what are the major componets of algorithm used by namenode to allocate location of block on different datanode ? to scale cluster configuration for particular data ? to design hadoop cluster to store 200TB of data (resource,configuration&no of nodes.) ?

    9. write a algorithm in which namenode decide to get the location of datanode to store block of file ?

    10. what is job of outputcollector ?

    11. in which we use split size greaterthen block size ?

    12write down the difference mapr and maptask ?

    13) write job of combiner ?

    14) write a mapreduce program , to introduce combiner class ?

    15) write a alogorithm for partioner class – name – testscore – mode (weekend and weekdays) ?

    1. which student scored hightest weekend and weekdays ?

    2. which student fresher or experience from weekdays and weekend scored highest ?

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