the value ouput from my map/reduce is a bytewritable array, which is written in the output file part-00000 (hadoop do so by default). i need this array for my next map ...
i am working with hadoop 19 on opensuse linux, i am not using any cluster rather running my hadoop code on my machine itself. i am following the standard technique on ...
this time someone should please relpy
i am struggling with running my code using distributed cahe. i have already the files on hdfs but when i run this code :
The first one works, the second doesn't. Does addFileToClassPath only work for jars? This seems weird because there's also an addArchiveToClassPath method.
I am trying to add multiple files to hadoop distributed cache. Actually I don't know the file names. They will be named like part-0000*. Can someone tell me how to do ...
I am trying to run a simple example using a binary executable and the
cached archive and it does not seem to be working:
The example I am trying to run has a ...
I have a very frustrating FileNotFound issue in deployment. In an abstract class that all of my mappers and reducers extend, I have the following in the configure method:
I am trying to run my Pig script (which uses UDFs) on Amazon's Elastic Map Reduce.
I need to use some static files from within my UDFs.
I do something like this in ...
Hadoop has also its own cache implementation, which stands for bringing big data at the right place in the right time, but is not a transactional cache. Distributed transactional cache are used in transactional systems to communicate states between the part of the processes running in diferent nodes but sharing the same transactional scope. While MapReduce framework is not suitable or ...