Uses of Interface
org.apache.giraph.reducers.ReduceOperation

Packages that use ReduceOperation

Package	Description
org.apache.giraph.benchmark	Package of benchmarks for performance testing and optimization
org.apache.giraph.comm.aggregators	Package for classes which are used to handle aggregators.
org.apache.giraph.master	Package of all the master related things.
org.apache.giraph.reducers	Package of Giraph reducers.
org.apache.giraph.reducers.impl	Package of Giraph reducers.

Uses of ReduceOperation in org.apache.giraph.benchmark

Classes in org.apache.giraph.benchmark that implement ReduceOperation

Modifier and Type	Class and Description
static class	ReducersBenchmark.TestLongSumReducer LongSumReducer

Uses of ReduceOperation in org.apache.giraph.comm.aggregators

Methods in org.apache.giraph.comm.aggregators with parameters of type ReduceOperation

Modifier and Type	Method and Description
void	OwnerAggregatorServerData.registerReducer(String name, ReduceOperation<Object,org.apache.hadoop.io.Writable> reduceOp) Register a reducer which current worker owns.

Uses of ReduceOperation in org.apache.giraph.master

Classes in org.apache.giraph.master that implement ReduceOperation

Modifier and Type	Class and Description
class	AggregatorReduceOperation<A extends org.apache.hadoop.io.Writable> Translates aggregation operation to reduce operations.

Methods in org.apache.giraph.master with parameters of type ReduceOperation

Modifier and Type	Method and Description
<S,R extends org.apache.hadoop.io.Writable> void	MasterAggregatorHandler.registerReducer(String name, ReduceOperation<S,R> reduceOp)
<S,R extends org.apache.hadoop.io.Writable> void	MasterGlobalCommHandler.registerReducer(String name, ReduceOperation<S,R> reduceOp)
<S,R extends org.apache.hadoop.io.Writable> void	MasterGlobalCommUsageAggregators.registerReducer(String name, ReduceOperation<S,R> reduceOp) Register reducer to be reduced in the next worker computation, using given name and operations.
<S,R extends org.apache.hadoop.io.Writable> void	MasterCompute.registerReducer(String name, ReduceOperation<S,R> reduceOp)
<S,R extends org.apache.hadoop.io.Writable> void	MasterAggregatorHandler.registerReducer(String name, ReduceOperation<S,R> reduceOp, R globalInitialValue)
<S,R extends org.apache.hadoop.io.Writable> void	MasterGlobalCommHandler.registerReducer(String name, ReduceOperation<S,R> reduceOp, R globalInitialValue)
<S,R extends org.apache.hadoop.io.Writable> void	MasterGlobalCommUsageAggregators.registerReducer(String name, ReduceOperation<S,R> reduceOp, R globalInitialValue) Register reducer to be reduced in the next worker computation, using given name and operations, starting globally from globalInitialValue.
<S,R extends org.apache.hadoop.io.Writable> void	MasterCompute.registerReducer(String name, ReduceOperation<S,R> reduceOp, R globalInitialValue)

Uses of ReduceOperation in org.apache.giraph.reducers

Classes in org.apache.giraph.reducers that implement ReduceOperation

Modifier and Type	Class and Description
class	ReduceSameTypeOperation<R extends org.apache.hadoop.io.Writable> ReduceOperation object when single object being reduced is of same type as reduced value.

Methods in org.apache.giraph.reducers that return ReduceOperation

Modifier and Type	Method and Description
ReduceOperation<S,R>	Reducer.getReduceOp()

Constructors in org.apache.giraph.reducers with parameters of type ReduceOperation

Constructor and Description
Reducer(ReduceOperation<S,R> reduceOp) Constructor
Reducer(ReduceOperation<S,R> reduceOp, R currentValue) Constructor

Uses of ReduceOperation in org.apache.giraph.reducers.impl

Classes in org.apache.giraph.reducers.impl that implement ReduceOperation

Modifier and Type	Class and Description
class	AndReduce ReduceOperation for calculating the AND function over boolean values.
class	KryoWrappedReduceOperation<S,R> Reduce operation which wraps reduced value in KryoWritableWrapper, so we don't need to worry about it being writable
class	LongXorReduce ReduceOperation that XORs (^) values together.
class	MaxPairReducer<L extends org.apache.hadoop.io.Writable,R extends org.apache.hadoop.io.WritableComparable> Aggregating PairWritable<L, R>, by taking pair with largest second value.
class	MaxReduce<T extends org.apache.hadoop.io.WritableComparable> Reducer for calculating max of values
class	MinReduce<T extends org.apache.hadoop.io.WritableComparable> Reducer for calculating min of values
class	OrReduce ReduceOperation for calculating the OR function over boolean values.
class	PairReduce<S1,R1 extends org.apache.hadoop.io.Writable,S2,R2 extends org.apache.hadoop.io.Writable> Combines two individual reducers, to create a single reducer of pairs that reduces each of them individually.
class	SumReduce<T extends org.apache.hadoop.io.Writable> Reducer for calculating sum of values

Constructors in org.apache.giraph.reducers.impl with parameters of type ReduceOperation

Constructor and Description
PairReduce(ReduceOperation<S1,R1> reduce1, ReduceOperation<S2,R2> reduce2) Constructor
PairReduce(ReduceOperation<S1,R1> reduce1, ReduceOperation<S2,R2> reduce2) Constructor