Questions tagged [rmr2]
5 questions
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vote
0 answers
MapReduce With CSV File rmr2 - Broken columns fail in HDFS
I'm having an issue with a CSV dataset in HDFS when performing MapReduce with rmr2.
With 1 file only the MapReduce works fine and no error is found, but when 2 or more datasets in the same folder the data starts to break and the results in starts…
0
votes
1 answer
using R function in reduce phase
I'm trying to find correlation coefficient of data frame and work perfectly.
Is there a problem finding correlation coefficient from data frame using cor(), or is it good to implement this code for large data?
cc = function(input, output = NULL){
…
bambang supono
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Not a valid jar
I am new to R Programming.
I am using below code after setting all env variables. All connections are working well but I am getting an error in executing below of to.dfs.
Please guide…
user8915561
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votes
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R Hadoop counting
I'm new in R, and i've a problem with MapReduce rmr2. I've a file to read of this kind, where in each row, there is a date and some words (A,B,C..) :
2016-05-10, A, B, C, A, R, E, F, E
2016-05-18, A, B, F, E, E
2016-06-01, A, B, K, T, T, E, G, E, A,…
GIULIO
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0
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1 answer
How to install Rhadoop on R 3.3.2?
I tried the following mentioned by Jinith:
How to install RHadoop packages (Rmr, Rhdfs, Rhbase)?
But I got this exception:
"Installing package into ‘/home/user/R/x86_64-pc-linux-gnu-library/3.2’
(as ‘lib’ is unspecified)
Warning: invalid package…
mate
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