Volume Placement Query Isolation for Empty Result Diagnosis
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Solution Overview
Problem
Existing methods for volume placement in cloud storage systems are resource-intensive and lack effective feedback mechanisms, leading to slow operations and obscure failure identification when determining optimal storage locations.
Innovation Solution
A method involving a series of optimized database queries is employed to iteratively determine the cause of failure in volume placement, allowing for improved feedback and efficient location determination by constructing complex queries from constituent parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a series of database queries are sent individually to determine volume placement, then the placement determination can be made, but the operation becomes resource intensive and slow
Solution Approach 1:
The patent combines multiple individual database queries into a single optimized query that retrieves all necessary information for volume placement determination in one operation. This merging of queries eliminates the overhead of multiple separate database connections and result processing, thereby improving operation speed while maintaining reliable placement determination.
2Productivity
If a series of database queries are sent as a group to determine volume placement, then resource usage is reduced, but feedback is lost and failure identification becomes obscure
Solution Approach 1:
The patent segments the optimized query into individual constituent queries and executes them separately, capturing the feedback and intermediate results from each query. This segmentation allows the system to maintain operation efficiency through optimized query structures while preserving detailed feedback information from each query stage, enabling precise failure identification.
Solution Approach 2:
The patent implements a feedback mechanism that collects and analyzes intermediate results from each query in the sequence. By examining the feedback from each individual query execution, the system can identify exactly where in the query sequence a failure occurs, thus preventing information loss while maintaining efficient batched query processing.
3Productivity
If an optimized query is used to determine volume placement, then operation speed is improved, but the ability to identify failure causes is reduced due to lack of intermediate feedback
Solution Approach 1:
The patent performs preliminary analysis of the optimized query structure to identify intermediate check points where failures can occur. By preparing the query execution plan in advance and knowing where to look for failure indicators, the system can quickly execute the optimized query while maintaining the ability to identify failure causes through pre-planned analysis of intermediate results.
Data Source
AI summary
Systems, methods, and machine-readable media are disclosed for isolating and reporting a volume placement error for a request to place a volume on a storage platform. A volume placement service requests information from a database using an optimized database query to determine an optimal location to place a new volume. The database returns no results. The volume placement service deconstructs the optimized database query to extract a plurality of queries. The volume placement service iterates over the plurality queries, combining queries in each iteration, to determine a cause for the database to return no results. The volume placement service determines based on the results of each iterative database request a cause the database to return an empty result. The volume placement service provides an indication of the cause for returning an empty result.