Goals

• CDAP and CDAP Applications have the ability to withstand short and transient infrastructural outages
• During interruption of underlying services (one or more), CDAP or CDAP Applications can operate under degraded performance/limited functionalities 
  • Users will not be able to perform operations like deploying apps, starting programs or new data or application lifecycle operations.
    • However all the applications that are running, should be running
• Once interruption in the underlying service is resolved or services come back to normal operation, the CDAP and CDAP Application will go back to normal state 
• Interruptions in service would be due to node failure, service failures or compatible rolling upgrades or downgrades in progress
• Does not include in-compatible upgrades or downgrades of underlying infrastructure 
• Does not include long unavailability of service and infrastructure

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