[train][V2] Implement Result::from_path in v2#58216
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Signed-off-by: xgui <xgui@anyscale.com>
Signed-off-by: xgui <xgui@anyscale.com>
Signed-off-by: xgui <xgui@anyscale.com>
Signed-off-by: xgui <xgui@anyscale.com>
Signed-off-by: xgui <xgui@anyscale.com>
Signed-off-by: xgui <xgui@anyscale.com>
Signed-off-by: xgui <xgui@anyscale.com>
This reverts commit f309643f4649f5f5f7ef7676c04fa99bfbca05e8. Signed-off-by: xgui <xgui@anyscale.com>
Signed-off-by: xgui <xgui@anyscale.com>
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This pull request introduces the Result::from_path method in Ray Train v2, which is a valuable feature for reconstructing results from stored checkpoints. The implementation is well-structured, leveraging the existing CheckpointManager to restore state, and is accompanied by a comprehensive set of tests covering local and remote storage, different path types, and error conditions.
I have one suggestion to improve the user-friendliness of an error message. Additionally, I noticed that the new _from_checkpoint_manager method duplicates logic from TrainController._build_result. A follow-up refactoring to consolidate this logic would be beneficial for maintainability.
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justinvyu
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Oct 27, 2025
Signed-off-by: Justin Yu <justinvyu@anyscale.com>
Signed-off-by: xgui <xgui@anyscale.com>
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Signed-off-by: xgui <xgui@anyscale.com>
YoussefEssDS
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Nov 8, 2025
## Description In this function, `Result::from_path` is implemented in ray train v2, which reconstructs a `Result` object from the checkpoints. This implementation leverages `CheckpointManager` and refers to https://github.com/ray-project/ray/blob/master/python/ray/train/v2/_internal/execution/controller/controller.py#L512-L540 --------- Signed-off-by: xgui <xgui@anyscale.com> Signed-off-by: Justin Yu <justinvyu@anyscale.com> Co-authored-by: Justin Yu <justinvyu@anyscale.com>
landscapepainter
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Nov 17, 2025
## Description In this function, `Result::from_path` is implemented in ray train v2, which reconstructs a `Result` object from the checkpoints. This implementation leverages `CheckpointManager` and refers to https://github.com/ray-project/ray/blob/master/python/ray/train/v2/_internal/execution/controller/controller.py#L512-L540 --------- Signed-off-by: xgui <xgui@anyscale.com> Signed-off-by: Justin Yu <justinvyu@anyscale.com> Co-authored-by: Justin Yu <justinvyu@anyscale.com>
SheldonTsen
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Dec 1, 2025
## Description In this function, `Result::from_path` is implemented in ray train v2, which reconstructs a `Result` object from the checkpoints. This implementation leverages `CheckpointManager` and refers to https://github.com/ray-project/ray/blob/master/python/ray/train/v2/_internal/execution/controller/controller.py#L512-L540 --------- Signed-off-by: xgui <xgui@anyscale.com> Signed-off-by: Justin Yu <justinvyu@anyscale.com> Co-authored-by: Justin Yu <justinvyu@anyscale.com>
Future-Outlier
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Dec 7, 2025
## Description In this function, `Result::from_path` is implemented in ray train v2, which reconstructs a `Result` object from the checkpoints. This implementation leverages `CheckpointManager` and refers to https://github.com/ray-project/ray/blob/master/python/ray/train/v2/_internal/execution/controller/controller.py#L512-L540 --------- Signed-off-by: xgui <xgui@anyscale.com> Signed-off-by: Justin Yu <justinvyu@anyscale.com> Co-authored-by: Justin Yu <justinvyu@anyscale.com> Signed-off-by: Future-Outlier <eric901201@gmail.com>
justinvyu
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Apr 24, 2026
This PR uncomment documentation about `Result.from_path` due to being at the time unsupported by Train v2 API. Now that it has been implemented #58216, we can uncomment this documentation for users. --------- Signed-off-by: Mark Towers <mark@anyscale.com> Co-authored-by: Mark Towers <mark@anyscale.com>
Lucas61000
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May 15, 2026
This PR uncomment documentation about `Result.from_path` due to being at the time unsupported by Train v2 API. Now that it has been implemented ray-project#58216, we can uncomment this documentation for users. --------- Signed-off-by: Mark Towers <mark@anyscale.com> Co-authored-by: Mark Towers <mark@anyscale.com>
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Description
In this function,
Result::from_pathis implemented in ray train v2, which reconstructs aResultobject from the checkpoints. This implementation leveragesCheckpointManagerand refers to https://github.com/ray-project/ray/blob/master/python/ray/train/v2/_internal/execution/controller/controller.py#L512-L540