Apache ORC
· ORC is a self-describing type-aware columnar file format designed
for Hadoop workloads. It is optimized for large streaming reads,
but with integrated support for finding required rows
quickly. Storing data in a columnar format lets the reader read,
decompress, and process only the values that are required for the
current query.
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 orc-1.5.1.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
