The HDFS in the CloudBook system stores the files of E-book in distributed
storage servers. The Cloud platform then coverts E-book files to the
vector graphic format through the vector graphic converter when some
users want to retrieve the E-book files. Due to the distributed environment
of cloud, this study proposes a locality-aware job scheduling
algorithm and applies the algorithm to the cloud platform to reduce
the time consumption of data transmission between computing nodes
and data nodes. The optimized cloud based CloudBook system is
introduced to solve the problem of limited resource in mobile devices.