Package | Description |
---|---|
com.google.appengine.tools.mapreduce | |
com.google.appengine.tools.mapreduce.impl | |
com.google.appengine.tools.mapreduce.impl.sort |
Modifier and Type | Interface and Description |
---|---|
interface |
MapOnlyMapperContext<O>
Context for
MapOnlyMapper execution. |
interface |
MapperContext<K,V>
A context for mapper execution.
|
interface |
ReducerContext<O>
Context for
Reducer execution. |
interface |
ShardContext
Context for each shard.
|
interface |
WorkerContext<O>
Context for each worker (mapper or reducer) shard.
|
Modifier and Type | Method and Description |
---|---|
Context |
Input.getContext()
Returns the current context, or null if none.
|
Context |
Output.getContext()
Returns the current context, or null if none.
|
Modifier and Type | Method and Description |
---|---|
void |
Output.setContext(Context context)
Used internally to sets the context to be used for the processing that follows.
|
Modifier and Type | Class and Description |
---|---|
class |
BaseContext
Base class for all Context implementations.
|
class |
BaseShardContext<O>
Base class for all ShardContext implementations.
|
Modifier and Type | Class and Description |
---|---|
class |
MergeContext
Provides a context for merging.
|
class |
SortContext
Provides a context for the in memory sort.
|
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