I am loading initial data (url list for a crawler) to Cassandra with status crawled=0. Then using Hadoop I crawl all the links and try to change crawled from 0 to something else, for example 1 or 2, o
I am trying to run MapReduce job on Hadoop but I am facing an error and I am not sure what is going wrong. I have to pas library jars which is required by my mapper.
I have to write a mapreduce job but I do开发者_如何学Pythonnt know how to go about it, I have jar MARD.jar through which I can instantiate MARD objects.
I would like to know the details (archi开发者_如何学JAVAtecture and design documents) about the next generation Apache MapReduce. Where are the sources to get more information about it?It is the only
I\'m new to the hadoop technologies .How to run the simple program through command line.I\'m using windows environment开发者_开发知识库.I install the Cygwin.Can you help me ...Try the below URLs.
In summary: I feel that my system is ignoring the concept of pre-sorted tables. - I expected to save time on the sorting step because I was using
I am trying to write a simple Map Reduce program using Hadoop which will give me the month which is most prone to flu. I am using the google flu trends dataset which can be found here http://www.googl
I want to create a directory inside the working directory of a MapRedu开发者_运维百科ce job in Hadoop.
I\'m new to the hadoop.I am trying to install hadoop on my windows machine with the help of following link i.e. http://blog.v开发者_StackOverflow中文版-lad.org/archives/4#comment-43
I am currently running a job I fixed the number of map task to 20 but and getting a higher number. I also set the reduce task to zero but I am still getting a number other than zero. The total time fo
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