I am starting to use Mahout for clustering, but I am having a hard time trying to convert a sql(mysql) dump to a mahout-compatible SequenceFile. I am using the code above.
I need to get the list of job names that currently running, but hadoop -job list give me a list of jobIDs.
I am new to Hadoop map reduce, I wanted to know that there is some outputformat type which can allow me to emit a matrix (2d array) directly from the m开发者_如何学运维apper (without converting to 1d)
I\'m using Pig on Amazon\'s Elastic Map-Reduce to do batch analytics.My input files are on S3 and contain events that are represented by one JSON dictionary per line.I use the elephantbird JsonLoader
Simplifying my problem a bit, I have a set of text files with "records" that are delimited by double newline characters. Like
I have ajar file \"Tsp.jar\" that I made myself. This same jar files executes well in single node cluster setup of hadoop. However when I run it on a cluster comprising 2 machines, a laptop and deskto
Somewhat of an odd question, but does anyone know what kind of sort MapReduce uses in the sort portion of shuffle/sort?I would think merge or insertion (in keeping with the whole MapReduce par开发者_如
I am trying to execute a Hadoop job on a remote hadoop cluster. Below is my code. Configuration conf = new Configuration();
I ran a clustering test on crawled pages (more than 25K docs ; personal data set). I\'ve done a clusterdump :
I want to know if I can compare two consecutive jobs in Hadoop. If not I would appreciate if anyone can tell me how to proceed with that. To be precise, I want to compare the jobs in terms of what exa
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