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MapReduce >> mail # user >> Issues in emitting 2D double array to Reducer.


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Re: Issues in emitting 2D double array to Reducer.
Hi,

you should create a custom data type, which contains two of the
DoubleArrayWritable instances. This custom data type idea is also explained
here:
http://my.safaribooksonline.com/book/-/9781849517287/4dot-developing-complex-hadoop-mapreduce-applications/ch04s03_html

Good luck.
Mirko

2013/10/28 unmesha sreeveni <[EMAIL PROTECTED]>

>
> http://stackoverflow.com/questions/19602692/java-lang-classcastexception-in-hadoop-mapreduce
>
> I tried out, but it is not working.
>
> I was able to emit 1 2D array..but When i cross checked once more, i am
> not able to print the matrix(2D array) in reducer.
>
> Can anyone suggest me a gud way to emit 2 Matrices from mapper.
>
>
>
> --
> *Thanks & Regards*
> *
> *
> Unmesha Sreeveni U.B*
> *
> *Junior Developer
> *
> *Amrita Center For Cyber Security
> *
> *
> Amritapuri.
>
> www.amrita.edu/cyber/
> *
>
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB