What is mydumper? and Why?

• Parallelism (hence, speed) and performance (avoids expensive character set conversion routines, efficient code overall)
• Easier to manage output (separate files for tables, dump metadata, etc, easy to view/parse data)
• Consistency – maintains snapshot across all threads, provides accurate master and slave log positions, etc
• Manageability – supports PCRE for specifying database and tables inclusions and exclusions

Source: maxbube/mydumper: Official mydumper project