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I wish to write a file and create a directory in my local file system through m MapReduce code. Also if I create a directory in the working directory during the job execution, how can I mo开发者_如何转
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.
here is my array sample $data[][]; Array( [0] => Array ( [id] => 1349 [rating1] => 1.9378838029981E-7
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 want to create a directory inside the working directory of a MapRedu开发者_运维百科ce job in Hadoop.
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
I am using mongoose with nodejs. I am using mapReduce to fetch data grouped by a field.So all it gives me as a collection is the key with the grouping field only from every row of database.
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