JamesPoon

When you launch an Ubuntu instance in Oracle Cloud Infrastructure, it is created with a default user named "ubuntu". By default, this user has sudo privileges, which means you can use the sudo...

Note for Spark study and learn by using Pyspark.

Background We usually have some How to? Use the following command to get the compile information of the class. javap -verbose [the class path] You will get the version information like the...