1. Resource sharing. Access any data and utilize CPU resources across the system.
2. Openness. Extensions, interoperability, portability.
3. Concurrency. Allows concurrent access, update of shared resources.
4. Scalability. Handle extra load. like increase in users, etc..
5. Fault tolerance. by having provisions for redundancy and recovery.
6. Heterogeneity. Different Operating systems, different hardware, Middleware system allows
this.
7. Transparency. Should appear as a whole instead of collection of computers.
8. Biggest challenge is to hide the details and complexity of accomplishing above challenges
from the user and to have a common unified interface to interact with it. Which is where
hadoop comes in.
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