We proposed to use cloud computing environment for distributed computations which simplifies creation and execution of composite applications which perform complex data analysis. Composite application operates with data accessed from Hadoop by API and consists of atomic computational tasks that achieve some analysis and modeling goals. We used environment for distributed computingbased cloud platform CLAVIRE which implements AaaS model for cloud computing and provide seamless integration of separate software modules and that runs on different computing resources. As a result this strongly simplified designing, executing and reusing already implemented applications.