Metadata handling

All operational data of one HDGS-Workbench is stored in a local Mongo-DB, and in a Zookeeper (instance or cluster).

This includes workflow definitions, which can be submitted to Oozie or SMILA for running or orchestrating jobs in the cluster, but also file sizes or job runtime durations as well as descriptions, which are used for reports are stored in this database. Intermediate results and the state of analysis projects is also stored here.