HBase
· Apache HBase is the Hadoop database. Use it when you need
random, realtime read/write access to your Big Data.
This project's goal is the hosting of very large tables -- billions of rows X millions of columns -- atop clusters
of commodity hardware.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window alihbase-2.1.7.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.