Uses of Class
com.google.appengine.tools.mapreduce.Worker

Packages that use Worker

Package	Description
com.google.appengine.tools.mapreduce
com.google.appengine.tools.mapreduce.impl
com.google.appengine.tools.mapreduce.impl.sort
com.google.appengine.tools.mapreduce.mappers
com.google.appengine.tools.mapreduce.reducers

Uses of Worker in com.google.appengine.tools.mapreduce

Subclasses of Worker in com.google.appengine.tools.mapreduce

Modifier and Type	Class and Description
class	MapOnlyMapper<I,O> Map function for Map only jobs.
class	Mapper<I,K,V> Map function for MapReduce computations.
class	Reducer<K,V,O> Reduce function for use in MapReduce.

Uses of Worker in com.google.appengine.tools.mapreduce.impl

Methods in com.google.appengine.tools.mapreduce.impl that return Worker

Modifier and Type	Method and Description
protected abstract Worker<C>	WorkerShardTask.getWorker()
protected Worker<ReducerContext<O>>	ReduceShardTask.getWorker()
protected Worker<MapperContext<K,V>>	MapShardTask.getWorker()
protected Worker<MapOnlyMapperContext<O>>	MapOnlyShardTask.getWorker()

Uses of Worker in com.google.appengine.tools.mapreduce.impl.sort

Subclasses of Worker in com.google.appengine.tools.mapreduce.impl.sort

Modifier and Type	Class and Description
class	SortWorker Sorts a set of keyValues by a lexicographical comparison of the bytes of the key.

Methods in com.google.appengine.tools.mapreduce.impl.sort that return Worker

Modifier and Type	Method and Description
protected Worker<MergeContext>	MergeShardTask.getWorker()
protected Worker<SortContext>	SortShardTask.getWorker()

Uses of Worker in com.google.appengine.tools.mapreduce.mappers

Subclasses of Worker in com.google.appengine.tools.mapreduce.mappers

Modifier and Type	Class and Description
class	IdentityMapper<K,V> A mapper that passes an incoming KeyValue to it's output.
class	KeyProjectionMapper<T> A pass through mapper that passes the input to the output key.

Uses of Worker in com.google.appengine.tools.mapreduce.reducers

Subclasses of Worker in com.google.appengine.tools.mapreduce.reducers

Modifier and Type	Class and Description
class	IdentityReducer<K,V> A passthrough reducer that passes it's input to it's output.
class	KeyProjectionReducer<K,V> Reducer that emits the keys that occur in its input, discarding the values.
class	NoReducer<K,V,O> Deprecated. Consider using MapJob instead.
class	ValueProjectionReducer<K,V> Reducer that emits the values that occur in its input, discarding the keys.