Package org.apache.tez.dag.api

Interface Summary

Interface	Description
EdgeManagerPluginContext	Context information provided to EdgeManagerPlugins This interface is not supposed to be implemented by users
VertexManagerPluginContext	Object with API's to interact with the Tez execution engine

Class Summary

Class	Description
DAG	Top level entity that defines the DAG (Directed Acyclic Graph) representing the data flow graph.
DataSinkDescriptor	Defines the output and output committer for a data sink
DataSourceDescriptor	Defines the input and input initializer for a data source
Edge	Edge defines the connection between a producer and consumer vertex in the DAG.
EdgeManagerPlugin	This interface defines the routing of the event between tasks of producer and consumer vertices.
EdgeManagerPluginDescriptor	Describes the @link EdgeManagerPlugin
EdgeManagerPluginOnDemand	This interface defines the routing of the event between tasks of producer and consumer vertices.
EdgeProperty	An @link EdgeProperty defines the relation between the source and destination vertices of an edge.
EntityDescriptor<T extends EntityDescriptor<T>>	Describes a given user code entity.
GroupInputEdge	A composite edge that represents a common connection between a group of input vertices and a single output vertex.
InputDescriptor	Describes the Input
InputInitializerDescriptor	Describes the InputInitializer
OutputCommitterDescriptor	Describes the OutputCommitter
OutputDescriptor	Describes the Output
PreWarmVertex	A PreWarmVertex is used to specify parameters to be used to setup prewarmed containers for Tez session mode.
ProcessorDescriptor	Describes the Processor
TaskLocationHint	Describes the placements hints for tasks.
TezConfiguration	Defines the configurations for Tez.
UserPayload	Wrapper class to hold user payloads Provides a version to help in evolving the payloads
Vertex	Defines a vertex in the DAG.
Vertex.VertexExecutionContext	The execution context for a running vertex.
VertexGroup	Represents a virtual collection of vertices whose members can be treated as a single named collection for graph operations.
VertexLocationHint	Describes the placements hints for tasks in a vertex.
VertexManagerPlugin	Interface to plugin user logic into the VertexManager to implement runtime scheduling optimizations and graph reconfiguration.
VertexManagerPluginDescriptor	Describes the VertexManagerPlugin

Enum Summary

Enum	Description
HistoryLogLevel	The log level for the history, this is used to determine which events are sent to the history logger.

Exception Summary

Exception	Description
DAGSubmissionTimedOut	Exception thrown when DAG submission to a Tez Session times out.
SessionNotRunning	Exception thrown when the client cannot communicate with the Tez Session as the Tez Session is no longer running.
TezException	Checked Exception thrown upon error
TezUncheckedException	Unchecked Exception thrown upon error