You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-dev@hadoop.apache.org by unmesha sreeveni <un...@gmail.com> on 2013/10/29 06:24:12 UTC
Issues in emitting 2D double array from mapper.
http://stackoverflow.com/questions/19602692/java-lang-classcastexception-in-hadoop-mapreduce
I tried out, but it is not working.
Can anyone suggest me a gud way for emitting two 2D double arrays as key
and value from mapper and read those two arrays as key and value from
reducer .
http://mapreduce-tutorial.blogspot.in/2011/04/custom-data-types.html
I have gone through this link.These r all new to me.
how to override those methods in writable.
--
*Thanks & Regards*
*
*
Unmesha Sreeveni U.B*
*
*Junior Developer
*
*Amrita Center For Cyber Security
*
*
Amritapuri.
www.amrita.edu/cyber/
*
Re: Issues in emitting 2D double array from mapper.
Posted by unmesha sreeveni <un...@gmail.com>.
2d double array is a matrix.so i should be able to emit the entire matrix .
Can any one suggest how to write a custom datatype
On Tue, Oct 29, 2013 at 10:54 AM, unmesha sreeveni <un...@gmail.com>wrote:
>
>
> http://stackoverflow.com/questions/19602692/java-lang-classcastexception-in-hadoop-mapreduce
>
> I tried out, but it is not working.
>
>
>
> Can anyone suggest me a gud way for emitting two 2D double arrays as key
> and value from mapper and read those two arrays as key and value from
> reducer .
>
>
> http://mapreduce-tutorial.blogspot.in/2011/04/custom-data-types.html
>
> I have gone through this link.These r all new to me.
>
> how to override those methods in writable.
>
> --
> *Thanks & Regards*
> *
> *
> Unmesha Sreeveni U.B*
> *
> *Junior Developer
> *
> *Amrita Center For Cyber Security
> *
> *
> Amritapuri.
>
> www.amrita.edu/cyber/
> *
>
--
*Thanks & Regards*
*
*
Unmesha Sreeveni U.B*
*
*Junior Developer
*
*Amrita Center For Cyber Security
*
*
Amritapuri.
www.amrita.edu/cyber/
*
Re: Issues in emitting 2D double array from mapper.
Posted by unmesha sreeveni <un...@gmail.com>.
2d double array is a matrix.so i should be able to emit the entire matrix .
Can any one suggest how to write a custom datatype
On Tue, Oct 29, 2013 at 10:54 AM, unmesha sreeveni <un...@gmail.com>wrote:
>
>
> http://stackoverflow.com/questions/19602692/java-lang-classcastexception-in-hadoop-mapreduce
>
> I tried out, but it is not working.
>
>
>
> Can anyone suggest me a gud way for emitting two 2D double arrays as key
> and value from mapper and read those two arrays as key and value from
> reducer .
>
>
> http://mapreduce-tutorial.blogspot.in/2011/04/custom-data-types.html
>
> I have gone through this link.These r all new to me.
>
> how to override those methods in writable.
>
> --
> *Thanks & Regards*
> *
> *
> Unmesha Sreeveni U.B*
> *
> *Junior Developer
> *
> *Amrita Center For Cyber Security
> *
> *
> Amritapuri.
>
> www.amrita.edu/cyber/
> *
>
--
*Thanks & Regards*
*
*
Unmesha Sreeveni U.B*
*
*Junior Developer
*
*Amrita Center For Cyber Security
*
*
Amritapuri.
www.amrita.edu/cyber/
*