Eager Schema Evolution in NoSQL Document Stores

Stefanie Scherzinger Meike Klettke Uta Storl

In this demo we present Cleager, a framework for eagerly managing schema evolution in schema-less NoSQL document stores. Cleager executes declarative schema modification operations as MapReduce jobs on the Google Cloud Platform. We present different scenarios that require data migration, such as adding, removing, or renaming properties of persisted objects, as well as copying and moving them between objects.

Eager Schema Evolution in NoSQL Document Stores