Make array_node_map_task the default map_task

dev-requirements.in

@@ -19,6 +19,7 @@ google-cloud-bigquery-storage
 IPython
 keyrings.alt
 setuptools_scm
+pytest-icdiff
 
 # Tensorflow is not available for python 3.12 yet: https://github.com/tensorflow/tensorflow/issues/62003
 tensorflow; python_version<'3.12'

flytekit/__init__.py

@@ -206,6 +206,7 @@
     from importlib.metadata import entry_points
 
 from flytekit._version import __version__
+from flytekit.core.array_node_map_task import map_task
 from flytekit.core.base_sql_task import SQLTask
 from flytekit.core.base_task import SecurityContext, TaskMetadata, kwtypes
 from flytekit.core.checkpointer import Checkpoint
@@ -216,7 +217,6 @@
 from flytekit.core.gate import approve, sleep, wait_for_input
 from flytekit.core.hash import HashMethod
 from flytekit.core.launch_plan import LaunchPlan, reference_launch_plan
-from flytekit.core.map_task import map_task
 from flytekit.core.notification import Email, PagerDuty, Slack
 from flytekit.core.pod_template import PodTemplate
 from flytekit.core.python_function_task import PythonFunctionTask, PythonInstanceTask

flytekit/bin/entrypoint.py

@@ -21,12 +21,10 @@
 )
 from flytekit.core import constants as _constants
 from flytekit.core import utils
-from flytekit.core.array_node_map_task import ArrayNodeMapTaskResolver
 from flytekit.core.base_task import IgnoreOutputs, PythonTask
 from flytekit.core.checkpointer import SyncCheckpoint
 from flytekit.core.context_manager import ExecutionParameters, ExecutionState, FlyteContext, FlyteContextManager
 from flytekit.core.data_persistence import FileAccessProvider
-from flytekit.core.map_task import MapTaskResolver
 from flytekit.core.promise import VoidPromise
 from flytekit.deck.deck import _output_deck
 from flytekit.exceptions import scopes as _scoped_exceptions
@@ -383,7 +381,6 @@ def _execute_map_task(
     prev_checkpoint: Optional[str] = None,
     dynamic_addl_distro: Optional[str] = None,
     dynamic_dest_dir: Optional[str] = None,
-    experimental: Optional[bool] = False,
 ):
     """
     This function should be called by map task and aws-batch task
@@ -409,14 +406,14 @@ def _execute_map_task(
         raw_output_data_prefix, checkpoint_path, prev_checkpoint, dynamic_addl_distro, dynamic_dest_dir
     ) as ctx:
         task_index = _compute_array_job_index()
-        if experimental:
-            mtr = ArrayNodeMapTaskResolver()
-        else:
-            mtr = MapTaskResolver()
-            output_prefix = os.path.join(output_prefix, str(task_index))
-
+        mtr = load_object_from_module(resolver)()
         map_task = mtr.load_task(loader_args=resolver_args, max_concurrency=max_concurrency)
 
+        # Special case for the map task resolver, we need to append the task index to the output prefix.
+        # TODO: (https://github.com/flyteorg/flyte/issues/5011) Remove legacy map task
+        if mtr.name() == "flytekit.core.legacy_map_task.MapTaskResolver":
+            output_prefix = os.path.join(output_prefix, str(task_index))
+
         if test:
             logger.info(
                 f"Test detected, returning. Inputs: {inputs} Computed task index: {task_index} "
@@ -548,7 +545,6 @@ def handle_sigterm(signum, frame):
 @_click.option("--resolver", required=True)
 @_click.option("--checkpoint-path", required=False)
 @_click.option("--prev-checkpoint", required=False)
-@_click.option("--experimental", is_flag=True, default=False, required=False)
 @_click.argument(
     "resolver-args",
     type=_click.UNPROCESSED,
@@ -565,7 +561,6 @@ def map_execute_task_cmd(
     resolver,
     resolver_args,
     prev_checkpoint,
-    experimental,
     checkpoint_path,
 ):
     logger.info(get_version_message())
@@ -586,7 +581,6 @@ def map_execute_task_cmd(
         resolver_args=resolver_args,
         checkpoint_path=checkpoint_path,
         prev_checkpoint=prev_checkpoint,
-        experimental=experimental,
     )
 
 

flytekit/core/array_node_map_task.py

@@ -183,7 +183,6 @@ def get_command(self, settings: SerializationSettings) -> List[str]:
             "{{.checkpointOutputPrefix}}",
             "--prev-checkpoint",
             "{{.prevCheckpointPrefix}}",
-            "--experimental",
             "--resolver",
             mt.name(),
             "--",
@@ -248,7 +247,7 @@ def _outputs_interface(self) -> Dict[Any, Variable]:
         """
 
         ctx = FlyteContextManager.current_context()
-        if ctx.execution_state is not None and ctx.execution_state.mode == ExecutionState.Mode.LOCAL_WORKFLOW_EXECUTION:
+        if ctx.execution_state and ctx.execution_state.is_local_execution():
             # In workflow execution mode we actually need to use the parent (mapper) task output interface.
             return self.interface.outputs
         return self.python_function_task.interface.outputs
@@ -367,7 +366,7 @@ def foo((i: int, j: str) -> str:
     """
 
     def name(self) -> str:
-        return "ArrayNodeMapTaskResolver"
+        return "flytekit.core.array_node_map_task.ArrayNodeMapTaskResolver"
 
     @timeit("Load map task")
     def load_task(self, loader_args: List[str], max_concurrency: int = 0) -> ArrayNodeMapTask:

flytekit/core/map_task.py → flytekit/core/legacy_map_task.py

@@ -150,7 +150,6 @@ def set_command_prefix(self, cmd: typing.Optional[typing.List[str]]):
     @contextmanager
     def prepare_target(self):
         """
-        TODO: why do we do this?
         Alters the underlying run_task command to modify it for map task execution and then resets it after.
         """
         self._run_task.set_command_fn(self.get_command)
@@ -386,7 +385,7 @@ def foo((i: int, j: str) -> str:
     """
 
     def name(self) -> str:
-        return "MapTaskResolver"
+        return "flytekit.core.legacy_map_task.MapTaskResolver"
 
     @timeit("Load map task")
     def load_task(self, loader_args: List[str], max_concurrency: int = 0) -> MapPythonTask:

flytekit/core/node.py

@@ -111,7 +111,7 @@ def flyte_entity(self) -> Any:
     @property
     def run_entity(self) -> Any:
         from flytekit.core.array_node_map_task import ArrayNodeMapTask
-        from flytekit.core.map_task import MapPythonTask
+        from flytekit.core.legacy_map_task import MapPythonTask
 
         if isinstance(self.flyte_entity, MapPythonTask):
             return self.flyte_entity.run_task

flytekit/experimental/__init__.py

@@ -1,4 +1,6 @@
 """Experimental features of flytekit."""
 
+# TODO(eapolinario): Remove this once a new flytekit release is out and
+# references are updated in the monodocs build.
 from flytekit.core.array_node_map_task import map_task  # noqa: F401
 from flytekit.experimental.eager_function import EagerException, eager

flytekit/tools/translator.py

@@ -15,7 +15,7 @@
 from flytekit.core.container_task import ContainerTask
 from flytekit.core.gate import Gate
 from flytekit.core.launch_plan import LaunchPlan, ReferenceLaunchPlan
-from flytekit.core.map_task import MapPythonTask
+from flytekit.core.legacy_map_task import MapPythonTask
 from flytekit.core.node import Node
 from flytekit.core.python_auto_container import PythonAutoContainerTask
 from flytekit.core.reference_entity import ReferenceEntity, ReferenceSpec, ReferenceTemplate

plugins/flytekit-k8s-pod/tests/test_pod.py

@@ -355,7 +355,7 @@ def simple_pod_task(i: int):
         "--prev-checkpoint",
         "{{.prevCheckpointPrefix}}",
         "--resolver",
-        "MapTaskResolver",
+        "ArrayNodeMapTaskResolver",
         "--",
         "vars",
         "",

tests/flytekit/unit/core/test_array_node_map_task.py

@@ -5,11 +5,10 @@
 
 import pytest
 
-from flytekit import task, workflow
+from flytekit import map_task, task, workflow
 from flytekit.configuration import FastSerializationSettings, Image, ImageConfig, SerializationSettings
 from flytekit.core.array_node_map_task import ArrayNodeMapTask, ArrayNodeMapTaskResolver
 from flytekit.core.task import TaskMetadata
-from flytekit.experimental import map_task as array_node_map_task
 from flytekit.tools.translator import get_serializable
 
 
@@ -32,7 +31,7 @@ def say_hello(name: str) -> str:
 
     @workflow
     def wf() -> List[str]:
-        return array_node_map_task(say_hello)(name=["abc", "def"])
+        return map_task(say_hello)(name=["abc", "def"])
 
     res = wf()
     assert res is not None
@@ -49,8 +48,8 @@ def create_input_list() -> List[str]:
 
     @workflow
     def wf() -> List[str]:
-        xs = array_node_map_task(say_hello)(name=create_input_list())
-        return array_node_map_task(say_hello)(name=xs)
+        xs = map_task(say_hello)(name=create_input_list())
+        return map_task(say_hello)(name=xs)
 
     assert wf() == ["hello hello earth!!", "hello hello mars!!"]
 
@@ -60,7 +59,7 @@ def test_serialization(serialization_settings):
     def t1(a: int) -> int:
         return a + 1
 
-    arraynode_maptask = array_node_map_task(t1, metadata=TaskMetadata(retries=2))
+    arraynode_maptask = map_task(t1, metadata=TaskMetadata(retries=2))
     task_spec = get_serializable(OrderedDict(), serialization_settings, arraynode_maptask)
 
     assert task_spec.template.metadata.retries.retries == 2
@@ -79,9 +78,8 @@ def t1(a: int) -> int:
         "{{.checkpointOutputPrefix}}",
         "--prev-checkpoint",
         "{{.prevCheckpointPrefix}}",
-        "--experimental",
         "--resolver",
-        "ArrayNodeMapTaskResolver",
+        "flytekit.core.array_node_map_task.ArrayNodeMapTaskResolver",
         "--",
         "vars",
         "",
@@ -101,7 +99,7 @@ def test_fast_serialization(serialization_settings):
     def t1(a: int) -> int:
         return a + 1
 
-    arraynode_maptask = array_node_map_task(t1, metadata=TaskMetadata(retries=2))
+    arraynode_maptask = map_task(t1, metadata=TaskMetadata(retries=2))
     task_spec = get_serializable(OrderedDict(), serialization_settings, arraynode_maptask)
 
     assert task_spec.template.container.args == [
@@ -122,9 +120,8 @@ def t1(a: int) -> int:
         "{{.checkpointOutputPrefix}}",
         "--prev-checkpoint",
         "{{.prevCheckpointPrefix}}",
-        "--experimental",
         "--resolver",
-        "ArrayNodeMapTaskResolver",
+        "flytekit.core.array_node_map_task.ArrayNodeMapTaskResolver",
         "--",
         "vars",
         "",
@@ -172,8 +169,8 @@ def test_metadata_in_task_name(kwargs1, kwargs2, same):
     def say_hello(name: str) -> str:
         return f"hello {name}!"
 
-    t1 = array_node_map_task(say_hello, **kwargs1)
-    t2 = array_node_map_task(say_hello, **kwargs2)
+    t1 = map_task(say_hello, **kwargs1)
+    t2 = map_task(say_hello, **kwargs2)
 
     assert (t1.name == t2.name) is same
 
@@ -183,7 +180,7 @@ def test_inputs_outputs_length():
     def many_inputs(a: int, b: str, c: float) -> str:
         return f"{a} - {b} - {c}"
 
-    m = array_node_map_task(many_inputs)
+    m = map_task(many_inputs)
     assert m.python_interface.inputs == {"a": List[int], "b": List[str], "c": List[float]}
     assert (
         m.name
@@ -193,7 +190,7 @@ def many_inputs(a: int, b: str, c: float) -> str:
     assert str(r_m.python_interface) == str(m.python_interface)
 
     p1 = functools.partial(many_inputs, c=1.0)
-    m = array_node_map_task(p1)
+    m = map_task(p1)
     assert m.python_interface.inputs == {"a": List[int], "b": List[str], "c": float}
     assert (
         m.name
@@ -203,7 +200,7 @@ def many_inputs(a: int, b: str, c: float) -> str:
     assert str(r_m.python_interface) == str(m.python_interface)
 
     p2 = functools.partial(p1, b="hello")
-    m = array_node_map_task(p2)
+    m = map_task(p2)
     assert m.python_interface.inputs == {"a": List[int], "b": str, "c": float}
     assert (
         m.name
@@ -213,7 +210,7 @@ def many_inputs(a: int, b: str, c: float) -> str:
     assert str(r_m.python_interface) == str(m.python_interface)
 
     p3 = functools.partial(p2, a=1)
-    m = array_node_map_task(p3)
+    m = map_task(p3)
     assert m.python_interface.inputs == {"a": int, "b": str, "c": float}
     assert (
         m.name
@@ -230,7 +227,7 @@ def many_outputs(a: int) -> (int, str):
         return a, f"{a}"
 
     with pytest.raises(ValueError):
-        _ = array_node_map_task(many_outputs)
+        _ = map_task(many_outputs)
 
 
 def test_parameter_order():
@@ -250,9 +247,9 @@ def task3(c: str, a: int, b: float) -> str:
     param_b = [0.1, 0.2, 0.3]
     param_c = "c"
 
-    m1 = array_node_map_task(functools.partial(task1, c=param_c))(a=param_a, b=param_b)
-    m2 = array_node_map_task(functools.partial(task2, c=param_c))(a=param_a, b=param_b)
-    m3 = array_node_map_task(functools.partial(task3, c=param_c))(a=param_a, b=param_b)
+    m1 = map_task(functools.partial(task1, c=param_c))(a=param_a, b=param_b)
+    m2 = map_task(functools.partial(task2, c=param_c))(a=param_a, b=param_b)
+    m3 = map_task(functools.partial(task3, c=param_c))(a=param_a, b=param_b)
 
     assert m1 == m2 == m3 == ["1 - 0.1 - c", "2 - 0.2 - c", "3 - 0.3 - c"]
 
@@ -262,7 +259,7 @@ def test_bounded_inputs_vars_order(serialization_settings):
     def task1(a: int, b: float, c: str) -> str:
         return f"{a} - {b} - {c}"
 
-    mt = array_node_map_task(functools.partial(task1, c=1.0, b="hello", a=1))
+    mt = map_task(functools.partial(task1, c=1.0, b="hello", a=1))
     mtr = ArrayNodeMapTaskResolver()
     args = mtr.loader_args(serialization_settings, mt)
 
@@ -287,7 +284,7 @@ def some_task1(inputs: int) -> int:
 
     @workflow
     def my_wf1() -> typing.List[typing.Optional[int]]:
-        return array_node_map_task(some_task1, min_success_ratio=min_success_ratio)(inputs=[1, 2, 3, 4])
+        return map_task(some_task1, min_success_ratio=min_success_ratio)(inputs=[1, 2, 3, 4])
 
     if should_raise_error:
         with pytest.raises(ValueError):
@@ -303,6 +300,6 @@ def my_mappable_task(a: int) -> typing.Optional[str]:
 
     @workflow
     def wf(x: typing.List[int]):
-        array_node_map_task(my_mappable_task)(a=x).with_overrides(container_image="random:image")
+        map_task(my_mappable_task)(a=x).with_overrides(container_image="random:image")
 
     assert wf.nodes[0]._container_image == "random:image"

tests/flytekit/unit/core/test_map_task.py

@@ -5,9 +5,9 @@
 import pytest
 
 import flytekit.configuration
-from flytekit import LaunchPlan, Resources, map_task
+from flytekit import LaunchPlan, Resources
 from flytekit.configuration import Image, ImageConfig
-from flytekit.core.map_task import MapPythonTask, MapTaskResolver
+from flytekit.core.legacy_map_task import MapPythonTask, MapTaskResolver, map_task
 from flytekit.core.task import TaskMetadata, task
 from flytekit.core.workflow import workflow
 from flytekit.tools.translator import get_serializable
@@ -96,7 +96,7 @@ def test_serialization(serialization_settings):
         "--prev-checkpoint",
         "{{.prevCheckpointPrefix}}",
         "--resolver",
-        "MapTaskResolver",
+        "flytekit.core.legacy_map_task.MapTaskResolver",
         "--",
         "vars",
         "",
@@ -247,7 +247,7 @@ def test_map_task_resolver(serialization_settings):
     assert mt.python_interface.inputs == {"a": typing.List[int], "b": typing.List[str], "c": typing.List[float]}
     assert mt.python_interface.outputs == list_outputs
     mtr = MapTaskResolver()
-    assert mtr.name() == "MapTaskResolver"
+    assert mtr.name() == "flytekit.core.legacy_map_task.MapTaskResolver"
     args = mtr.loader_args(serialization_settings, mt)
     t = mtr.load_task(loader_args=args)
     assert t.python_interface.inputs == mt.python_interface.inputs