dvc-unfreeze:tldr:694f2

The command "dvc unfreeze ${stage_name_a} [${stage_name_b} ...]" is used in DVC (Data Version Control) to unfreeze or restore a frozen stage or stages within a project.

In DVC, a frozen stage refers to a stage that has been "frozen" as part of the versioning process. Freezing a stage means that the data and artifacts generated by that stage are locked, preventing them from being modified or deleted. This is useful when you want to ensure reproducibility and traceability of your data and pipelines.

To unfreeze a frozen stage, you need to use the "dvc unfreeze" command. Here, ${stage_name_a} and ${stage_name_b} refer to the names of the frozen stages that you want to unfreeze. The command can take multiple stage names as arguments, allowing you to unfreeze multiple stages at once.

When you run the command and specify the stage names, DVC will unfreeze the corresponding stages, making their data and artifacts mutable again. This allows you to modify or delete the outputs of these stages if needed.

Unfreezing a stage can be useful in scenarios where you want to make changes to the pipeline or data, re-run certain stages, or update dependencies without starting from scratch and re-executing the entire pipeline.