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Packages that use Reducer.Context | |
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org.apache.hadoop.examples | Hadoop example code. |
org.apache.hadoop.mapred | A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner. |
org.apache.hadoop.mapreduce | |
org.apache.hadoop.mapreduce.lib.fieldsel | |
org.apache.hadoop.mapreduce.lib.reduce |
Uses of Reducer.Context in org.apache.hadoop.examples |
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Methods in org.apache.hadoop.examples with parameters of type Reducer.Context | |
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void |
SecondarySort.Reduce.reduce(SecondarySort.IntPair key,
Iterable<IntWritable> values,
Reducer.Context context)
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void |
WordCount.IntSumReducer.reduce(Text key,
Iterable<IntWritable> values,
Reducer.Context context)
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Uses of Reducer.Context in org.apache.hadoop.mapred |
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Methods in org.apache.hadoop.mapred that return Reducer.Context | ||
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protected static
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Task.createReduceContext(Reducer<INKEY,INVALUE,OUTKEY,OUTVALUE> reducer,
Configuration job,
TaskAttemptID taskId,
RawKeyValueIterator rIter,
Counter inputKeyCounter,
Counter inputValueCounter,
RecordWriter<OUTKEY,OUTVALUE> output,
OutputCommitter committer,
StatusReporter reporter,
RawComparator<INKEY> comparator,
Class<INKEY> keyClass,
Class<INVALUE> valueClass)
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Uses of Reducer.Context in org.apache.hadoop.mapreduce |
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Methods in org.apache.hadoop.mapreduce with parameters of type Reducer.Context | |
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protected void |
Reducer.cleanup(Reducer.Context context)
Called once at the end of the task. |
protected void |
Reducer.reduce(KEYIN key,
Iterable<VALUEIN> values,
Reducer.Context context)
This method is called once for each key. |
void |
Reducer.run(Reducer.Context context)
Advanced application writers can use the Reducer.run(org.apache.hadoop.mapreduce.Reducer.Context) method to
control how the reduce task works. |
protected void |
Reducer.setup(Reducer.Context context)
Called once at the start of the task. |
Uses of Reducer.Context in org.apache.hadoop.mapreduce.lib.fieldsel |
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Methods in org.apache.hadoop.mapreduce.lib.fieldsel with parameters of type Reducer.Context | |
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void |
FieldSelectionReducer.reduce(Text key,
Iterable<Text> values,
Reducer.Context context)
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void |
FieldSelectionReducer.setup(Reducer.Context context)
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Uses of Reducer.Context in org.apache.hadoop.mapreduce.lib.reduce |
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Methods in org.apache.hadoop.mapreduce.lib.reduce with parameters of type Reducer.Context | |
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void |
IntSumReducer.reduce(Key key,
Iterable<IntWritable> values,
Reducer.Context context)
|
void |
LongSumReducer.reduce(KEY key,
Iterable<LongWritable> values,
Reducer.Context context)
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