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Computing squares in R
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The following script will download and install the latest version of R on each of your Elastic MapReduce hosts. (The default version of R is very old.)
Name this Download script bootstrapLatestR.sh and it should contain the following code:
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| src | http://sagebionetworks.jira.com/source/browse/~raw,r=HEAD/PLFM/users/deflaux/scripts/EMR/rWordCountExample/bootstrapLatestR.sh |
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| style | height:250px;width:80%; |
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hello world
What is going on in this script?
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The following script will download and install several packages needed for RHadoop.
Name this Download script bootstrapRHadoop.sh and it should contain the following code:
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| src | http://sagebionetworks.jira.com/source/browse/~raw,r=HEAD/PLFM/users/deflaux/scripts/EMR/rmrExample/bootstrapRHadoop.sh |
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| style | height:250px;width:80%; |
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Upload your scripts to S3
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> q()Save workspace image? [y/n/c]: n
hadoop@ip-10-114-89-121:/mnt/var/log/bootstrap-actions$ exit
logout
Connection to ec2-107-20-108-57.compute-1.amazonaws.com closed.
~>elastic-mapreduce --credentials ~/.ssh/$USER-credentials.json --terminate --jobflow j-79VXH9Z07ECL
Terminated job flow j-79VXH9Z07ECL
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What next?
- Try the more complicated examples such as Logistic Regression and K-means in https://github.com/RevolutionAnalytics/RHadoop/wiki/Tutorial.
- Take a look at the Elastic MapReduce FAQ for how to SCP files to the Hadoop master host.
- Take a look at the other Computation Examples
