I have to ma开发者_开发问答ke a project Distributed rendering of a 3d image. I can use standard algorithms. The aim is to learn hadoop and not image processing. So can any one suggest what language sh
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I have a created a simple MapReduce Driver that implements the Tool interface.But when I try to run the job in Eclipse, I get a NoClassDefFoundError before the run() method is invoked.
I am following the book Hadoop: the definitive Guide. I am confused on example 3-1. There is a Java source file, URLCat.java.
I am trying to add multiple files to hadoop distributed cache. Actuall开发者_如何学Goy I don\'t know the file names. They will be named like part-0000*. Can someone tell me how to do that?
Hadoop map-reduce configuration provides the mapred.task.limit.maxvmem and mapred.task.default.maxvmem.
I get multiple small files into my input dir开发者_运维问答ectory which I want to merge into a single file without using the local file system or writing mapreds. Is there a way I could do it using ha
I\'m looking at the need to import a lot of data in realtime into a Lucene index.This will consist of files of various formats (Doc, Docx, Pdf, etc).
I\'m looking into replacing a bunch of Python ETL scripts that perform a nightly / hourly data summary and statistics gathering on a massive amount of data.
I am trying to f开发者_JAVA百科ind the sum of any given points using hadoop, The issue I am having is on getting all values from a given key in a single reducer. It looks like this.
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