Apache Spark: how to rename or delete a file from HDFS?
In this short post I will show you how you can change the name of the file / files created by Apache Spark to HDFS or simply rename or delete any file.
Scala: how to run a shell command from the code level?
In this post I will show you how to run the shell command by programming in Scala and how you can use it in Apache Spark.
Windows: How to add a server name and IP to the hosts file?
A short tutorial on how to edit the hosts file under Windows system.
How to run several commands on a Linux system in parallel mode?
You would like to run several commands at the same time, but each of them should be run in a separate thread.
Windows: How to add an environment variable?
To add an environment variable, start the Start Menu and depending on whether you have set the PL or ENG language in Windows enter the appropriate phrase:
