Using R In Azure Data Lake Analytics

Kevin Feasel

2017-10-12

Cloud, R

David Smith links to a tutorial which shows how to use R against Azure Data Lake Analytics:

The Azure Data Lake store is an Apache Hadoop file system compatible with HDFS, hosted and managed in the Azure Cloud. You can store and access the data within directly via the API, by connecting the filesystem directly to Azure HDInsight services, or via HDFS-compatible open-source applications. And for data science applications, you can also access the data directly from R, as this tutorial explains.

To interface with Azure Data Lake, you’ll use U-SQL, a SQL-like language extensible using C#. The R Extensions for U-SQL allow you to reference an R script from a U-SQL statement, and pass data from Data Lake into the R Script. There’s a 500Mb limit for the data passed to R, but the basic idea is that you perform the main data munging tasks in U-SQL, and then pass the prepared data to R for analysis. With this data you can use any function from base R or any R package. (Several common R packages are provided in the environment, or you can upload and install other packages directly, or use the checkpoint package to install everything you need.) The R engine used is R 3.2.2.

Click through for the details.

Related Posts

An Introduction To seplyr

John Mount guest blogs on the Revolutions blog about seplyr: seplyr is an R package that supplies improved standard evaluation interfaces for many common data wrangling tasks. The core of seplyr is a re-skinning of dplyr‘s functionality to seplyr conventions (similar to how stringr re-skins the implementing package stringi). Read on for a couple of examples of where seplyr can make it easier for you to […]

Read More

Creating An Azure Chat Bot

Dustin Ryan shows how to build a QnA bot: After you’ve created your knowledge base you can then edit and update your knowledge base. There’s a few different ways to update your knowledge. a. Manually edit the knowledge base directly within QnAMaker.ai. You can do this by directly editing the questions by modifying the text […]

Read More

Categories

October 2017
MTWTFSS
« Sep Nov »
 1
2345678
9101112131415
16171819202122
23242526272829
3031