Package org.apache.tez.runtime.api

Interface Summary

Interface	Description
ExecutionContext	The context for the executor within which a task runs.
Input	Represents an input through which a Processor receives data on an edge.
InputContext	Context handle for the Input to initialize itself.
InputFrameworkInterface	Represents an input through which a TezProcessor receives data on an edge.
InputInitializerContext	A context that provides information to the InputInitializer
InputStatistics	Provides various statistics about physical execution activity happening on a logical input in a Vertex.
InputStatisticsReporter	Report statistics about the Input
LogicalInput	An Input which handles all incoming physical connections on an edge.
LogicalInputFrameworkInterface	Defines the framework facing interfact for a LogicalInput User implementations are expected to derive from AbstractLogicalInput
LogicalIOProcessor	Represents a processor which consumes LogicalInputs and produces LogicalOutputs
LogicalIOProcessorFrameworkInterface	Represents a processor framework interface which consumes LogicalInputs and produces LogicalOutputs.
LogicalOutput	An @link Output which handles all outgoing physical connections on an edge.
LogicalOutputFrameworkInterface	Framework facing interface for the LogicalOutput Users are expected to derive from AbstractLogicalOutput
MergedInputContext	Context for MergedLogicalInput This interface is not supposed to be implemented by users
ObjectRegistry	A simple shared object registry to cache objects in the memory of the container running the task.
Output	Represents an Output through which a TezProcessor writes information to an edge.
OutputCommitterContext	Context through which the OutputCommitter can access all the relevant information that it needs.
OutputContext	Context handle for the Output to initialize itself.
OutputFrameworkInterface	Represents the Tez framework part of an Output.
OutputStatistics	Provides various statistics about physical execution activity happening on a logical output in a Vertex.
OutputStatisticsReporter	Report statistics about the Output
Processor	Processor represents the Tez entity responsible for consuming Input and producing Output.
ProcessorContext	Context handle for the Processor to initialize itself.
ProcessorFrameworkInterface	Represents the Tez framework part of an Processor.
TaskContext	Base interface for Context classes used to initialize the Input, Output and Processor instances.
VertexStatistics	Provides various statistics about the physical execution of this Vertex This only provides point in time values for the statistics and values are refreshed based on when the implementations of the inputs/outputs/tasks etc.

Class Summary

Class	Description
AbstractLogicalInput	An abstract class which should be the base class for all implementations of LogicalInput.
AbstractLogicalIOProcessor	Abstract representation of the interface LogicalIOProcessor.
AbstractLogicalOutput	An abstract class which should be the base class for all implementations of LogicalOutput.
Event	Base class for all events generated within the Tez execution engine.
InputInitializer	InputInitializers are typically used to initialize vertices connected to data sources.
InputSpecUpdate	Update Input specs for Inputs running in a task.
MemoryUpdateCallback	This interface will be used by Tez to inform components about available memory.
MergedLogicalInput	A LogicalInput that is used to merge the data from multiple inputs and provide a single Reader to read that data.
OutputCommitter	OutputCommitter to "finalize" the output and make it user-visible if needed.
Reader	A Reader represents the data being read in an Input It encapsulates the data type etc of the data being provided by the Input E.g.
Writer	A Writer represents the data being written by an Output It encapsulates the data type etc of the data being provided by the Output E.g.

Exception Summary

Exception	Description
ProgressFailedException