Yousun Jeong is an Senior Engineer of SKT(SK Telecom) which is a No.1 communications service provider in South Korea. She contributes to the Apache as a committer and deliver Spark to big data analytic cluster in SKT. Big data analysis of SKT mainly focuses on the various machine logs in diverse data types (ie formatted/unformatted). It essentially needs real-time processing and real-time analysis such as network quality analysis platform. She is really hoping to share her experience with the conference attendees.