Distributed File System Entity State Distribution
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Solution Overview
Problem
Conventional file systems face challenges in maintaining low latency and durability guarantees for file system requests, especially in distributed environments where data is accessed over networks, as the directory structure is often confined to local hard drives and lacks efficient distribution of file system entity state across computing nodes.
Innovation Solution
A distributed file system architecture with multiple computing node tiers, including front end and back end nodes, utilizes a distribution component with logic to distribute file system entity state across these tiers, ensuring that state is closer to requestors to reduce latency while maintaining durability guarantees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If file system state is centralized on local hard drives, then data organization is simple and deterministic, but access latency increases and scalability is limited
Solution Approach 1:
The patent segments the file system state into multiple distributed copies across different computing nodes. Each node maintains a portion of the file system state, allowing parallel access and reducing latency. The segmentation enables the system to handle multiple requests simultaneously without centralized bottlenecks.
Solution Approach 2:
The patent transitions from a single-dimension centralized file system to a multi-dimensional distributed architecture. State is replicated across multiple nodes in the network, adding spatial distribution as a new dimension. This allows requests to be served from multiple locations simultaneously, reducing latency while maintaining data consistency through coordination protocols.
2Productivity
If file system state is distributed across multiple nodes, then access latency is reduced and scalability improves, but maintaining durability guarantees becomes more difficult
Solution Approach 1:
The patent applies local quality by having different computing nodes specialize in different aspects of file system operations. Front-end nodes handle request processing with low-latency state access, while back-end nodes provide durable storage. This specialization allows each node to optimize for its specific function while maintaining overall system reliability through coordinated state management.
Solution Approach 2:
The patent introduces intermediary mechanisms (distributed coordination protocols and state synchronization layers) that mediate between the distributed state copies and durability requirements. These intermediaries ensure that state changes are properly coordinated across nodes, maintaining durability guarantees while enabling parallel access and high throughput.
3Loss of time
If front end nodes cache file system state, then request latency is reduced, but consistency with back end durable storage becomes challenging
Solution Approach 1:
The patent applies preliminary action by pre-fetching and caching file system state at front-end nodes before requests arrive. This allows the system to serve requests from local cache with minimal latency. The cached state is periodically synchronized with back-end durable storage, ensuring consistency while maintaining performance benefits of local caching.
Solution Approach 2:
The patent implements periodic synchronization between front-end caches and back-end durable storage. State is replicated from front-end nodes to back-end nodes at regular intervals or upon specific events, ensuring consistency while allowing front-end nodes to operate with low-latency local state during inter-synchronization periods.
Data Source
AI summary
A distributed file system that includes multiple computing node tiers. Each of at least some of the multiple computing node tiers has multiple computing nodes having like characteristics. The distributed file system also has an executable component in the form of a distribution component that comprises logic that distributes state of file system entities amongst the computing node tiers. The distribution is performed so that latency of file system requests are reduced due to state responsive to many requests being much closer latency wise to the file system requestor(s). Furthermore, the distribution considers durability guarantees of the state, thereby meeting durability guarantees.