eHive system overview. The eHive system is based on a Blackboard System implemented as a MySQL database. It contains a list of all the jobs to run as well as dataflow and branching rules. The operator monitors and controls the system using a program called beekeeper. It connects to the blackboard and creates workers as required. Workers run in a queuing environment, typically LSF. They run jobs for a particular analysis until no more jobs are available or they reach the end of their one hour lifespan. The eHive also keeps track of the throughput of the pipeline as it runs.