Package | Description |
---|---|
org.apache.hadoop.mapreduce | |
org.apache.hadoop.mapreduce.lib.map | |
org.apache.hadoop.mapreduce.task |
Modifier and Type | Class and Description |
---|---|
class |
Mapper.Context
The
Context passed on to the Mapper implementations. |
Modifier and Type | Method and Description |
---|---|
static <K1,V1,K2,V2> |
ContextFactory.cloneMapContext(MapContext<K1,V1,K2,V2> context,
org.apache.hadoop.conf.Configuration conf,
RecordReader<K1,V1> reader,
RecordWriter<K2,V2> writer)
Copy a custom WrappedMapper.Context, optionally replacing
the input and output.
|
Modifier and Type | Class and Description |
---|---|
class |
WrappedMapper.Context |
Modifier and Type | Field and Description |
---|---|
protected MapContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> |
WrappedMapper.Context.mapContext |
Modifier and Type | Method and Description |
---|---|
Mapper.Context |
WrappedMapper.getMapContext(MapContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> mapContext)
Get a wrapped
Mapper.Context for custom implementations. |
Constructor and Description |
---|
WrappedMapper.Context(MapContext<KEYIN,VALUEIN,KEYOUT,VALUEOUT> mapContext) |
Modifier and Type | Class and Description |
---|---|
class |
MapContextImpl<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
The context that is given to the
Mapper . |
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