Augmented Metadata Signatures for Object Store Synchronization
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Solution Overview
Problem
Existing file systems face challenges in efficiently retrieving objects from an object store due to the high number of lookups required to determine offset addresses, and in synchronizing objects across a peer-to-peer network without causing signature mismatches due to local node-specific information and augmented metadata.
Innovation Solution
The system stores augmented metadata in an object store, allowing for identical signatures with and without the metadata by calculating signatures before modification or ignoring the metadata, and uses this metadata to reduce lookups and ensure synchronization across nodes by treating objects with and without augmented metadata as identical.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the system stores augmented metadata in objects to enable faster retrieval and synchronization, then productivity and ease of operation are improved, but device complexity increases due to the need to manage both augmented and non-augmented metadata
Solution Approach 1:
The patent segments metadata into two distinct types: augmented metadata (stored in the object itself) and non-augmented metadata (stored separately). This segmentation allows the system to retrieve objects using augmented metadata for fast access while maintaining the ability to use non-augmented metadata for synchronization purposes, thereby improving productivity without overwhelming complexity
Solution Approach 2:
The patent introduces an intermediary mechanism that treats objects with and without augmented metadata as identical by calculating signatures that ignore the augmented portion. This intermediary layer (the signature calculation process) mediates between the augmented metadata storage and the synchronization system, allowing fast retrieval while maintaining synchronization simplicity
2Reliability
If the system calculates signatures ignoring augmented metadata to ensure identical signatures across nodes, then reliability of synchronization is improved, but measurement precision of object identity verification is reduced
Solution Approach 1:
The patent applies local quality by making the signature calculation selectively ignore only the augmented metadata portion while still accounting for the core object content. This allows the signature to serve dual purposes: ensuring synchronization reliability across nodes while maintaining sufficient precision to verify object identity, as the signature reflects the essential object content rather than node-specific augmented data
Data Source
AI summary
In an example, a system may modify an object stored in an object store for storing objects to include augmented metadata. The system may encode a signature of the modified object such that the signature is identical to a signature of the object prior to being modified to include the augmented metadata.