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What are the Feature of Data lake stores ?

Azure data lake is the key services of microsoft bigdata platform. There are 2 main component of Azure Data lake is Data store and analytics. Store is one of important.

1.Each file in ADL stores is sliced into blocks.
2. Blocks are distributed across multiple data nodes in the backed storage system.
3. With sufficient number of back-end storage data nodes, files of any size can be stored here.
4. Back-end storage runs in to the azure cloud which has virtually unlimited resources.
5. Metadata stored about each file. No limit to metadata either.
6. Azure maintains 3 replicas of each data object per region across three fault and upgrade domains.
7. Each create or append operation on a replica is replicated to other two.
8. Writes are committed to application only after all replicas  are successfully updated.
9. Read operation can go against all replica.
10. It is role based access mechanism. Each file/ directory has owner and group. they have r,w,x permissions.

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