Package org.apache.giraph.graph

Package of all the graph related objects, built on the org.apache.bsp package.

See: Description

Interface Summary

Interface	Description
Computation<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable,M1 extends org.apache.hadoop.io.Writable,M2 extends org.apache.hadoop.io.Writable>	Interface for an application for computation.
GraphTaskManager.CheckerIfWorkerShouldFailAfterException	Interface to check if worker should fail after a thread gets an exception
JobProgressTrackerClient	Wrapper around JobProgressTracker which retries to connect and swallows exceptions so app wouldn't crash if something goes wrong with progress reports.
MapperObserver	Mapper observer It can implement ContextSettable if it needs to access job counters.
Vertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	Class which holds vertex id, data and edges.
VertexChanges<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	Structure to hold all the possible graph mutations that can occur during a superstep.
VertexResolver<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	Handles all the situations that can arise upon creation/removal of vertices and edges.
VertexValueCombiner<V extends org.apache.hadoop.io.Writable>	When vertex values with the same vertex id are loaded, this class specifies how to combine their vertex values.

Class Summary

Class	Description
AbstractComputation<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable,M1 extends org.apache.hadoop.io.Writable,M2 extends org.apache.hadoop.io.Writable>	See Computation for explanation of the interface.
AddressesAndPartitionsWritable	Helper class to write descriptions of master, workers and partition owners
BasicComputation<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable,M extends org.apache.hadoop.io.Writable>	Computation in which both incoming and outgoing message types are the same.
ByteValueVertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	Special version of vertex that holds the value in raw byte form to save memory.
ComputeCallable<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable,M1 extends org.apache.hadoop.io.Writable,M2 extends org.apache.hadoop.io.Writable>	Compute as many vertex partitions as possible.
DefaultVertex<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	Class which holds vertex id, data and edges.
DefaultVertexResolver<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	Default implementation of how to resolve vertex creation/removal, messages to nonexistent vertices, etc.
DefaultVertexValueCombiner<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	The default vertex value combining approach is to simply keep the original value.
FinishedSuperstepStats	Immutable graph stats after the completion of a superstep
GiraphTransferRegulator	Utility class to manage data transfers from a local worker reading InputSplits.
GlobalStats	Aggregated stats by the master.
GraphMapper<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	This mapper that will execute the BSP graph tasks alloted to this worker.
GraphState	Immutable global state of the graph.
GraphTaskManager<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	The Giraph-specific business logic for a single BSP compute node in whatever underlying type of cluster our Giraph job will run on.
GraphTaskManager.FailWithEveryExceptionOccurred	Class to use by default, where each exception causes job failure
JobProgressTrackerClientNoOp	Class to use for JobProgressTracker client when progress shouldn't be tracked or something goes wrong
OnlyIdVertex<I extends org.apache.hadoop.io.WritableComparable>	Vertex which only contains ID.
RetryableJobProgressTrackerClient	Wrapper around JobProgressTracker which retries to connect and swallows exceptions so app wouldn't crash if something goes wrong with progress reports.
TaskInfo	Abstract class for information about any task - worker or master.
VertexEdgeCount	Simple immutable structure for storing a final vertex and edge count.
VertexMutations<I extends org.apache.hadoop.io.WritableComparable,V extends org.apache.hadoop.io.Writable,E extends org.apache.hadoop.io.Writable>	Structure to hold all the possible graph mutations that can occur during a superstep.

Enum Summary

Enum	Description
GraphFunctions	Each compute node running on the underlying cluster is marked with this enum to indicate the worker or master task(s) it must perform during job runs.
GraphType	Enumeration for a user graph type (IVEMM)
Language	Programming language that something is implemented in

Package org.apache.giraph.graph Description

Package of all the graph related objects, built on the org.apache.bsp package.