flytekitplugins.hive.HiveSelectTask#

class flytekitplugins.hive.HiveSelectTask(*args, **kwargs)[source]#

Parameters

select_query – Singular query that returns a Tabular dataset
stage_query – optional query that should be executed before the actual select_query. This can usually be used for setting memory or the an alternate execution engine like :ref:`tez<https://tez.apache.org/>`_/

Methods

compile(ctx, *args, **kwargs)#

Generates a node that encapsulates this task in a workflow definition.

Parameters: ctx (flytekit.core.context_manager.FlyteContext) –

construct_node_metadata()#

Used when constructing the node that encapsulates this task as part of a broader workflow definition.

Return type: flytekit.models.core.workflow.NodeMetadata

dispatch_execute(ctx, input_literal_map)#

This method translates Flyte’s Type system based input values and invokes the actual call to the executor This method is also invoked during runtime.

VoidPromise is returned in the case when the task itself declares no outputs.
Literal Map is returned when the task returns either one more outputs in the declaration. Individual outputs may be none
DynamicJobSpec is returned when a dynamic workflow is executed

Parameters

ctx (flytekit.core.context_manager.FlyteContext) –
input_literal_map (flytekit.models.literals.LiteralMap) –

Return type

Union[flytekit.models.literals.LiteralMap, flytekit.models.dynamic_job.DynamicJobSpec]

execute(**kwargs)#

This method will be invoked to execute the task.

Return type: Any

find_lhs()#

Return type: str

get_config(settings)#

Returns the task config as a serializable dictionary. This task config consists of metadata about the custom defined for this task.

Parameters: settings (flytekit.configuration.SerializationSettings) –
Return type: Optional[Dict[str, str]]

get_container(settings)#

Returns the container definition (if any) that is used to run the task on hosted Flyte.

Parameters: settings (flytekit.configuration.SerializationSettings) –
Return type: Optional[flytekit.models.task.Container]

get_custom(settings)#

Return additional plugin-specific custom data (if any) as a serializable dictionary.

Parameters: settings (flytekit.configuration.SerializationSettings) –
Return type: Dict[str, Any]

get_input_types()#

Returns the names and python types as a dictionary for the inputs of this task.

Return type: Dict[str, type]

get_k8s_pod(settings)#

Returns the kubernetes pod definition (if any) that is used to run the task on hosted Flyte.

Parameters: settings (flytekit.configuration.SerializationSettings) –
Return type: Optional[flytekit.models.task.K8sPod]

get_query(**kwargs)#

Return type: str

get_sql(settings)#

Returns the Sql definition (if any) that is used to run the task on hosted Flyte.

Parameters: settings (flytekit.configuration.SerializationSettings) –
Return type: Optional[flytekit.models.task.Sql]

get_type_for_input_var(k, v)#

Returns the python type for an input variable by name.

Parameters

k (str) –
v (Any) –

Return type

Type[Any]

get_type_for_output_var(k, v)#

Returns the python type for the specified output variable by name.

Parameters

k (str) –
v (Any) –

Return type

Type[Any]

classmethod interpolate_query(query_template, **kwargs)#

This function will fill in the query template with the provided kwargs and return the interpolated query. Please note that when SQL tasks run in Flyte, this step is done by the task executor.

Return type: Any

local_execute(ctx, **kwargs)#

This function is used only in the local execution path and is responsible for calling dispatch execute. Use this function when calling a task with native values (or Promises containing Flyte literals derived from Python native values).

Parameters: ctx (flytekit.core.context_manager.FlyteContext) –
Return type: Optional[Union[Tuple[flytekit.core.promise.Promise], flytekit.core.promise.Promise, flytekit.core.promise.VoidPromise]]

post_execute(user_params, rval)#

Post execute is called after the execution has completed, with the user_params and can be used to clean-up, or alter the outputs to match the intended tasks outputs. If not overridden, then this function is a No-op

Parameters

execute (rval is returned value from call to) –
user_params (Optional[flytekit.core.context_manager.ExecutionParameters]) – are the modified user params as created during the pre_execute step
rval (Any) –

Return type

Any

pre_execute(user_params)#

This is the method that will be invoked directly before executing the task method and before all the inputs are converted. One particular case where this is useful is if the context is to be modified for the user process to get some user space parameters. This also ensures that things like SparkSession are already correctly setup before the type transformers are called

This should return either the same context of the mutated context

Parameters: user_params (Optional[flytekit.core.context_manager.ExecutionParameters]) –
Return type: Optional[flytekit.core.context_manager.ExecutionParameters]

sandbox_execute(ctx, input_literal_map)#

Call dispatch_execute, in the context of a local sandbox execution. Not invoked during runtime.

Parameters

ctx (flytekit.core.context_manager.FlyteContext) –
input_literal_map (flytekit.models.literals.LiteralMap) –

Return type

flytekit.models.literals.LiteralMap

Attributes

cluster_label#

disable_deck#: If true, this task will not output deck html file

docs#

environment#: Any environment variables that supplied during the execution of the task.

instantiated_in#

interface#

lhs#

location#

metadata#

name#

output_schema_type#

python_interface#: Returns this task’s python interface.

query_template#

security_context#

tags#

task_config#: Returns the user-specified task config which is used for plugin-specific handling of the task.

task_type#

task_type_version#