Monthly Archives: February 2015

Below are some Sqoop Export Commands and Other Miscellaneous commands Sqoop-export It is nothing but exporting data from HDFS to database. To use ‘export‘ command, a table in database should already exist. then only export functionality in sqoop will works. export command will works in two ways 1. insert 2. […]

Sqoop Export Commands

Formula to calculate HDFS nodes Storage (H) Below is the formula to calculate the HDFS Storage size required, when building a new Hadoop cluster. H = C*R*S/(1-i) * 120% Where: C = Compression ratio. It depends on the type of compression used (Snappy, LZOP, …) and size of the data. When no […]

Formula to Calculate HDFS nodes storage

RStudio Example Run 4
In this post, we will briefly discuss about the steps for RHadoop Installation on Ubuntu 14.04 Machine with Hadoop-2.6.0 version. We also see the procedure for R & RStudio Installations on Ubuntu Machine. All these installations are done on single node hadoop machine. RStudio Installation on Hadoop Machine Before proceeding […]

RHadoop Installation on Ubuntu