feat(csharp/src/Drivers/Apache): Add prefetch functionality to CloudFetch in Spark ADBC driver #2678
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csharp/src/Drivers/Databricks/CloudFetch/IHiveServer2Statement.cs
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Update DatabricksParameters.cs address comments fix linter rebase to master refactor to fix unit test refactor some code refactoring refactor Delete CloudFetchDownloadManagerTest.cs Initital changes
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…etch in Spark ADBC driver (apache#2678) # Add Prefetch Functionality to CloudFetch in Spark ADBC Driver This PR enhances the CloudFetch feature in the Spark ADBC driver by implementing prefetch functionality, which improves performance by fetching multiple batches of results ahead of time. ## Changes ### CloudFetchResultFetcher Enhancements - **Initial Prefetch**: Added code to perform an initial prefetch of multiple batches when the fetcher starts, ensuring data is available immediately when needed. - **State Management**: Added tracking for current batch offset and size, with proper state reset when starting the fetcher. ### Interface Updates - Added new methods to `ICloudFetchResultFetcher` interface: ### Testing Infrastructure - Created `ITestableHiveServer2Statement` interface to facilitate testing - Updated tests to account for prefetch behavior - Ensured all tests pass with the new prefetch functionality ## Benefits - **Improved Performance**: By prefetching multiple batches, data is available sooner, reducing wait times. - **Better Reliability**: Enhanced error handling and state management make the system more robust. - **More Efficient Resource Usage**: Link caching reduces unnecessary server requests. This implementation maintains backward compatibility while providing significant performance improvements for CloudFetch operations.
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Add Prefetch Functionality to CloudFetch in Spark ADBC Driver
This PR enhances the CloudFetch feature in the Spark ADBC driver by implementing prefetch functionality, which improves performance by fetching multiple batches of results ahead of time.
Changes
CloudFetchResultFetcher Enhancements
Interface Updates
ICloudFetchResultFetcherinterface:Testing Infrastructure
ITestableHiveServer2Statementinterface to facilitate testingBenefits
This implementation maintains backward compatibility while providing significant performance improvements for CloudFetch operations.