[train] Turn on Train v2 by default#57857
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justinvyu merged 2 commits intoray-project:masterfrom Oct 17, 2025
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This pull request correctly enables Ray Train v2 by default by changing the default value for the RAY_TRAIN_V2_ENABLED environment variable. The change is straightforward and aligns with the migration to v2 as described. I have one suggestion to add a docstring to the is_v2_enabled function to improve code clarity and maintainability, making the new default behavior explicit.
aslonnie
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Oct 17, 2025
justinyeh1995
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Oct 20, 2025
Release tests, unit tests, doctests, and examples are all migrated to V2, so this PR turns V2 on by default. To run with Train V1 (deprecated), set `RAY_TRAIN_V2_ENABLED=0`. --------- Signed-off-by: Justin Yu <justinvyu@anyscale.com>
xinyuangui2
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Oct 22, 2025
Release tests, unit tests, doctests, and examples are all migrated to V2, so this PR turns V2 on by default. To run with Train V1 (deprecated), set `RAY_TRAIN_V2_ENABLED=0`. --------- Signed-off-by: Justin Yu <justinvyu@anyscale.com> Signed-off-by: xgui <xgui@anyscale.com>
elliot-barn
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Oct 23, 2025
Release tests, unit tests, doctests, and examples are all migrated to V2, so this PR turns V2 on by default. To run with Train V1 (deprecated), set `RAY_TRAIN_V2_ENABLED=0`. --------- Signed-off-by: Justin Yu <justinvyu@anyscale.com> Signed-off-by: elliot-barn <elliot.barnwell@anyscale.com>
landscapepainter
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Nov 17, 2025
Release tests, unit tests, doctests, and examples are all migrated to V2, so this PR turns V2 on by default. To run with Train V1 (deprecated), set `RAY_TRAIN_V2_ENABLED=0`. --------- Signed-off-by: Justin Yu <justinvyu@anyscale.com>
Aydin-ab
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Nov 19, 2025
Release tests, unit tests, doctests, and examples are all migrated to V2, so this PR turns V2 on by default. To run with Train V1 (deprecated), set `RAY_TRAIN_V2_ENABLED=0`. --------- Signed-off-by: Justin Yu <justinvyu@anyscale.com> Signed-off-by: Aydin Abiar <aydin@anyscale.com>
Future-Outlier
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Dec 7, 2025
Release tests, unit tests, doctests, and examples are all migrated to V2, so this PR turns V2 on by default. To run with Train V1 (deprecated), set `RAY_TRAIN_V2_ENABLED=0`. --------- Signed-off-by: Justin Yu <justinvyu@anyscale.com> Signed-off-by: Future-Outlier <eric901201@gmail.com>
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Description
Release tests, unit tests, doctests, and examples are all migrated to V2, so this PR turns V2 on by default. To run with Train V1 (deprecated), set
RAY_TRAIN_V2_ENABLED=0.Related issues
#49454
Additional information
User guides and API references have already been updated to V2.