[no_early_kickoff] Revert "Revert "[tune-telemetry] Tag searcher and scheduler types. (#33561)""

python/ray/air/_internal/usage.py

@@ -1,9 +1,11 @@
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Set, Union
 
 from ray._private.usage.usage_lib import TagKey, record_extra_usage_tag
 
 if TYPE_CHECKING:
     from ray.train.trainer import BaseTrainer
+    from ray.tune.schedulers import TrialScheduler
+    from ray.tune.search import BasicVariantGenerator, Searcher
 
 AIR_TRAINERS = {
     "HorovodTrainer",
@@ -18,16 +20,97 @@
     "XGBoostTrainer",
 }
 
+# searchers implemented by Ray Tune.
+TUNE_SEARCHERS = {
+    "AxSearch",
+    "BayesOptSearch",
+    "TuneBOHB",
+    "DragonflySearch",
+    "HEBOSearch",
+    "HyperOptSearch",
+    "NevergradSearch",
+    "OptunaSearch",
+    "SkOptSearch",
+    "ZOOptSearch",
+}
+
+# These are just wrappers around real searchers.
+# We don't want to double tag in this case, otherwise, the real tag
+# will be overwritten.
+TUNE_SEARCHER_WRAPPERS = {
+    "ConcurrencyLimiter",
+    "Repeater",
+}
+
+TUNE_SCHEDULERS = {
+    "FIFOScheduler",
+    "AsyncHyperBandScheduler",
+    "AsyncHyperBandScheduler",
+    "MedianStoppingRule",
+    "HyperBandScheduler",
+    "HyperBandForBOHB",
+    "PopulationBasedTraining",
+    "PopulationBasedTrainingReplay",
+    "PB2",
+    "ResourceChangingScheduler",
+}
+
+
+def _find_class_name(obj, allowed_module_path_prefix: str, whitelist: Set[str]):
+    """Find the class name of the object. If the object is not
+    under `allowed_module_path_prefix` or if its class is not in the whitelist,
+    return "Custom".
+
+    Args:
+        obj: The object under inspection.
+        allowed_module_path_prefix: If the `obj`'s class is not under
+            the `allowed_module_path_prefix`, its class name will be anonymized.
+        whitelist: If the `obj`'s class is not in the `whitelist`,
+            it will be anonymized.
+    Returns:
+        The class name to be tagged with telemetry.
+    """
+    module_path = obj.__module__
+    cls_name = obj.__class__.__name__
+    if module_path.startswith(allowed_module_path_prefix) and cls_name in whitelist:
+        return cls_name
+    else:
+        return "Custom"
+
 
 def tag_air_trainer(trainer: "BaseTrainer"):
     from ray.train.trainer import BaseTrainer
 
     assert isinstance(trainer, BaseTrainer)
-    module_path = trainer.__module__
-    if module_path.startswith("ray.train"):
-        trainer_name = trainer.__class__.__name__
-        if trainer_name not in AIR_TRAINERS:
-            trainer_name = "Custom"
-    else:
-        trainer_name = "Custom"
+    trainer_name = _find_class_name(trainer, "ray.train", AIR_TRAINERS)
     record_extra_usage_tag(TagKey.AIR_TRAINER, trainer_name)
+
+
+def tag_searcher(searcher: Union["BasicVariantGenerator", "Searcher"]):
+    from ray.tune.search import BasicVariantGenerator, Searcher
+
+    if isinstance(searcher, BasicVariantGenerator):
+        # Note this could be highly inflated as all train flows are treated
+        # as using BasicVariantGenerator.
+        record_extra_usage_tag(TagKey.TUNE_SEARCHER, "BasicVariantGenerator")
+    elif isinstance(searcher, Searcher):
+        searcher_name = _find_class_name(
+            searcher, "ray.tune.search", TUNE_SEARCHERS.union(TUNE_SEARCHER_WRAPPERS)
+        )
+        if searcher_name in TUNE_SEARCHER_WRAPPERS:
+            # ignore to avoid double tagging with wrapper name.
+            return
+        record_extra_usage_tag(TagKey.TUNE_SEARCHER, searcher_name)
+    else:
+        assert False, (
+            "Not expecting a non-BasicVariantGenerator, "
+            "non-Searcher type passed in for `tag_searcher`."
+        )
+
+
+def tag_scheduler(scheduler: "TrialScheduler"):
+    from ray.tune.schedulers import TrialScheduler
+
+    assert isinstance(scheduler, TrialScheduler)
+    scheduler_name = _find_class_name(scheduler, "ray.tune.schedulers", TUNE_SCHEDULERS)
+    record_extra_usage_tag(TagKey.TUNE_SCHEDULER, scheduler_name)

python/ray/tests/test_usage_stats.py

@@ -1197,7 +1197,7 @@ def ready(self):
         payload["extra_usage_tags"]["num_actor_tasks"] = "0"
         payload["extra_usage_tags"]["num_normal_tasks"] = "0"
         payload["extra_usage_tags"]["num_drivers"] = "0"
-        assert payload["extra_usage_tags"] == {
+        expected_payload = {
             "extra_k1": "extra_v1",
             "_test1": "extra_v2",
             "_test2": "extra_v3",
@@ -1215,6 +1215,10 @@ def ready(self):
             "gcs_storage": gcs_storage_type,
             "dashboard_used": "False",
         }
+        if os.environ.get("RAY_MINIMAL") != "1":
+            expected_payload["tune_scheduler"] = "FIFOScheduler"
+            expected_payload["tune_searcher"] = "BasicVariantGenerator"
+        assert payload["extra_usage_tags"] == expected_payload
         assert payload["total_num_nodes"] == 1
         assert payload["total_num_running_jobs"] == 1
         if os.environ.get("RAY_MINIMAL") == "1":

python/ray/train/base_trainer.py

@@ -56,6 +56,9 @@ class BaseTrainer(abc.ABC):
     Note: The base ``BaseTrainer`` class cannot be instantiated directly. Only
     one of its subclasses can be used.
 
+    Note to AIR developers: If a new AIR trainer is added, please update
+    `air/_internal/usage.py`.
+
     **How does a trainer work?**
 
     - First, initialize the Trainer. The initialization runs locally,

python/ray/tune/schedulers/async_hyperband.py

@@ -65,7 +65,7 @@ def __init__(
         if mode:
             assert mode in ["min", "max"], "`mode` must be 'min' or 'max'!"
 
-        FIFOScheduler.__init__(self)
+        super().__init__()
         self._reduction_factor = reduction_factor
         self._max_t = max_t
 

python/ray/tune/schedulers/hyperband.py

@@ -97,7 +97,7 @@ def __init__(
         if mode:
             assert mode in ["min", "max"], "`mode` must be 'min' or 'max'!"
 
-        FIFOScheduler.__init__(self)
+        super().__init__()
         self._eta = reduction_factor
         self._s_max_1 = int(np.round(np.log(max_t) / np.log(reduction_factor))) + 1
         self._max_t_attr = max_t

python/ray/tune/schedulers/median_stopping_rule.py

@@ -54,7 +54,7 @@ def __init__(
         min_time_slice: int = 0,
         hard_stop: bool = True,
     ):
-        FIFOScheduler.__init__(self)
+        super().__init__()
         self._stopped_trials = set()
         self._grace_period = grace_period
         self._min_samples_required = min_samples_required

python/ray/tune/schedulers/pbt.py

@@ -391,7 +391,7 @@ def __init__(
         if mode:
             assert mode in ["min", "max"], "`mode` must be 'min' or 'max'."
 
-        FIFOScheduler.__init__(self)
+        super().__init__()
         self._metric = metric
         self._mode = mode
         self._metric_op = None
@@ -1024,7 +1024,7 @@ def _load_policy(self, policy_file: str) -> Tuple[Dict, List[Tuple[int, Dict]]]:
         policy = []
         last_new_tag = None
         last_old_conf = None
-        for (old_tag, new_tag, old_step, new_step, old_conf, new_conf) in reversed(
+        for old_tag, new_tag, old_step, new_step, old_conf, new_conf in reversed(
             raw_policy
         ):
             if last_new_tag and old_tag != last_new_tag:

python/ray/tune/schedulers/trial_scheduler.py

@@ -1,5 +1,6 @@
 from typing import Dict, Optional
 
+from ray.air._internal.usage import tag_scheduler
 from ray.tune.execution import trial_runner
 from ray.tune.result import DEFAULT_METRIC
 from ray.tune.experiment import Trial
@@ -8,7 +9,11 @@
 
 @DeveloperAPI
 class TrialScheduler:
-    """Interface for implementing a Trial Scheduler class."""
+    """Interface for implementing a Trial Scheduler class.
+
+    Note to Tune developers: If a new scheduler is added, please update
+    `air/_internal/usage.py`.
+    """
 
     CONTINUE = "CONTINUE"  #: Status for continuing trial execution
     PAUSE = "PAUSE"  #: Status for pausing trial execution
@@ -23,6 +28,9 @@ class TrialScheduler:
 
     _supports_buffered_results = True
 
+    def __init__(self):
+        tag_scheduler(self)
+
     @property
     def metric(self):
         return self._metric
@@ -127,6 +135,9 @@ def restore(self, checkpoint_path: str):
 class FIFOScheduler(TrialScheduler):
     """Simple scheduler that just runs trials in submission order."""
 
+    def __init__(self):
+        super().__init__()
+
     def on_trial_add(self, trial_runner: "trial_runner.TrialRunner", trial: Trial):
         pass
 

python/ray/tune/search/basic_variant.py

@@ -7,6 +7,7 @@
 import warnings
 import numpy as np
 
+from ray.air._internal.usage import tag_searcher
 from ray.tune.error import TuneError
 from ray.tune.experiment.config_parser import _make_parser, _create_trial_from_spec
 from ray.tune.search.sample import np_random_generator, _BackwardsCompatibleNumpyRng
@@ -294,6 +295,7 @@ def __init__(
             Union[int, "np_random_generator", np.random.RandomState]
         ] = None,
     ):
+        tag_searcher(self)
         self._trial_generator = []
         self._iterators = []
         self._trial_iter = None

python/ray/tune/search/searcher.py

@@ -5,6 +5,7 @@
 import warnings
 from typing import Dict, Optional, List, Union, Any, TYPE_CHECKING
 
+from ray.air._internal.usage import tag_searcher
 from ray.tune.search.util import _set_search_properties_backwards_compatible
 from ray.util.annotations import DeveloperAPI, PublicAPI
 from ray.util.debug import log_once
@@ -32,6 +33,9 @@ class Searcher:
 
     Not all implementations support multi objectives.
 
+    Note to Tune developers: If a new searcher is added, please update
+    `air/_internal/usage.py`.
+
     Args:
         metric: The training result objective value attribute. If
             list then list of training result objective value attributes
@@ -76,6 +80,7 @@ def __init__(
         metric: Optional[str] = None,
         mode: Optional[str] = None,
     ):
+        tag_searcher(self)
         self._metric = metric
         self._mode = mode
 

src/ray/protobuf/usage.proto

@@ -118,4 +118,10 @@ enum TagKey {
   // Name of AIR trainer, or "Custom" if user-defined.
   // Example: "TorchTrainer"
   AIR_TRAINER = 500;
+  // Name of Tune search algorithm or "Custom" if user-defined.
+  // Example: "TuneBOHB", "BasicVariantGenerator"
+  TUNE_SEARCHER = 501;
+  // Name of Tune scheduler algorithm or "Custom" if user-defined.
+  // Example: "FIFOScheduler"
+  TUNE_SCHEDULER = 502;
 }