[Backlogmanager] [FIWARE-JIRA] (HELP-9351) [fiware-stackoverflow] Fiware-Cosmos MapReduce

[Fernando Lopez (JIRA)]

     [ https://jira.fiware.org/browse/HELP-9351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fernando Lopez updated HELP-9351:
---------------------------------
     HD-Chapter: Data
    Description: 
Created question in FIWARE Q/A platform on 03-03-2015 at 17:03
{color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/28837355/fiware-cosmos-mapreduce


+Question:+
Fiware-Cosmos MapReduce

+Description:+
I have a Question regarding the MapReduce example explained here:

http://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/BigData_Analysis_-_Quick_Start_for_Programmers

It is indeed the most common example of hadoop MapReduce, the WordCount.

I am able to execute it with no problems at the global instance of Cosmos, but even when I give it an small input (a file with 2 or 3 lines) it takes a lot to execute it (half a minute more or less). I assume this is its normal behavior but my question is: ¿Why does it takes so long even for an small input?

I guess this method increases its efectiveness with bigger datasets where this minimal delay is negligible.


  was:

Created question in FIWARE Q/A platform on 03-03-2015 at 17:03
{color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/28837355/fiware-cosmos-mapreduce


+Question:+
Fiware-Cosmos MapReduce

+Description:+
I have a Question regarding the MapReduce example explained here:

http://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/BigData_Analysis_-_Quick_Start_for_Programmers

It is indeed the most common example of hadoop MapReduce, the WordCount.

I am able to execute it with no problems at the global instance of Cosmos, but even when I give it an small input (a file with 2 or 3 lines) it takes a lot to execute it (half a minute more or less). I assume this is its normal behavior but my question is: ¿Why does it takes so long even for an small input?

I guess this method increases its efectiveness with bigger datasets where this minimal delay is negligible.


     HD-Enabler: Cosmos

> [fiware-stackoverflow] Fiware-Cosmos MapReduce
> ----------------------------------------------
>
>                 Key: HELP-9351
>                 URL: https://jira.fiware.org/browse/HELP-9351
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Francisco Romero
>              Labels: fiware, fiware-cygnus, hadoop, mapreduce
>
> Created question in FIWARE Q/A platform on 03-03-2015 at 17:03
> {color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/28837355/fiware-cosmos-mapreduce
> +Question:+
> Fiware-Cosmos MapReduce
> +Description:+
> I have a Question regarding the MapReduce example explained here:
> http://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/BigData_Analysis_-_Quick_Start_for_Programmers
> It is indeed the most common example of hadoop MapReduce, the WordCount.
> I am able to execute it with no problems at the global instance of Cosmos, but even when I give it an small input (a file with 2 or 3 lines) it takes a lot to execute it (half a minute more or less). I assume this is its normal behavior but my question is: ¿Why does it takes so long even for an small input?
> I guess this method increases its efectiveness with bigger datasets where this minimal delay is negligible.



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