Add configurable download method to object_store for enhanced usability #6837
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- Implemented and to handle concurrent downloads and efficient file writing. - Added the main function to coordinate multi-chunk downloads and writes. - Introduced support for cancellation using , enabling early termination of both downloads and writes. - Added to allow customization of concurrency, buffer size, and retry limits. These functions provide an efficient way to handle downloads from an while ensuring robust error handling and cancellation support.
…patibility with uploads. This change enhances clarity by using a more generic and versatile name for transfer-related operations. Changes made: - Updated the name in the source code. - Adjusted related documentation and comments. No functional changes were introduced beyond the refactor.
- Renamed struct TransferConfig to TransferOptions to improve code clarity and consistency. - Renamed fields in `TransferConfig`: `max_concurrent_chunks` to `concurrent_tasks`, and `chunk_queue_size` to `buffer_capacity` for clarity. - Updated references to old variables throughout the codebase. Rationale: - Improved readability and maintainability. - `<old_variable_name>` was ambiguous or inconsistent with naming conventions. No functional changes were made; this is purely a refactor for naming consistency.
…SendToChannel` formerly `SendDataError` - Renamed several error variants for better clarity and consistency. - Updated the `source` of one error to properly propagate the original cause.
- Removed redundant documentation as it's already implicit in the code.
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Thank you for this PR. We are in the process of moving the object_store code to its own repository. Would it be possible for you to create a PR in that repository instead?
(we will handle moving all existing issues to the new repository) |
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Which issue does this PR close?
Closes apache/arrow-rs-object-store#267
Rationale for this change
The current
getmethod inObjectStorerequires users to handle multipart downloads and large file transfers manually, which can be complex and error-prone. This PR proposes a newdownloadmethod to streamline this process by:This change simplifies the API for users and aligns with the feature request outlined in issue apache/arrow-rs-object-store#267.
What changes are included in this PR?
downloadmethod in theobject_store::localmodule.TransferOptionsstruct for user-configurable transfer options, such as concurrency, buffer size, and retry limits.download_chunk: Downloads individual chunks of data.write_multi_chunks: Writes downloaded chunks to a local file.Are there any user-facing changes?
Yes:
downloadmethod to simplify file downloads from the object store.TransferOptionsstruct.downloadmethod.