[Data] Deprecate ConcurrencyCapBackpressurePolicy#63392
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bveeramani merged 4 commits intoMay 18, 2026
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Mark ConcurrencyCapBackpressurePolicy as deprecated with a removal target of Ray 2.59. Emits a RayDeprecationWarning on instantiation. Signed-off-by: Balaji Veeramani <bveeramani@berkeley.edu>
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This pull request deprecates the ConcurrencyCapBackpressurePolicy class by applying the @deprecated decorator. The reviewer suggested enhancing the deprecation message by including a recommended replacement policy to provide a clear migration path for users.
Emit the deprecation warning conditionally (only when enable_dynamic_output_queue_size_backpressure is set), and add unit tests for both the enabled and disabled cases. Signed-off-by: Balaji Veeramani <bveeramani@berkeley.edu>
Signed-off-by: Balaji Veeramani <bveeramani@berkeley.edu>
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Signed-off-by: Balaji Veeramani <bveeramani@berkeley.edu>
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We introduced an experimental "dynamic queue size backpressure" six months ago in ray-project#57996. This PR adds a warning that we're going to deprecate it in a few releases. We've decided to deprecate it for a couple reasons: * It's hard to understand. The policy requires ~400 lines of control logic with multiple tunable constants, trend detection across two different signals (percentage growth and absolute growth), and sliding window history tracking. * It performed worse than the simpler `DownstreamCapacityBackpressurePolicy` in our experiments. * Removing the policy allows us to simplify the `ResourceManager` interface. `ResourceManager` is one of Ray Data's most involved modules. --------- Signed-off-by: Balaji Veeramani <bveeramani@berkeley.edu> Signed-off-by: phattruong <23120318@student.hcmus.edu.vn>
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We introduced an experimental "dynamic queue size backpressure" six months ago in #57996.
This PR adds a warning that we're going to deprecate it in a few releases.
We've decided to deprecate it for a couple reasons:
DownstreamCapacityBackpressurePolicyin our experiments.ResourceManagerinterface.ResourceManageris one of Ray Data's most involved modules.