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java.lang.Objectorg.apache.hadoop.mapred.lib.aggregate.ValueAggregatorBaseDescriptor
org.apache.hadoop.examples.AggregateWordHistogram.AggregateWordHistogramPlugin
public static class AggregateWordHistogram.AggregateWordHistogramPlugin
Field Summary |
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Fields inherited from class org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorBaseDescriptor |
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DOUBLE_VALUE_SUM, inputFile, LONG_VALUE_MAX, LONG_VALUE_MIN, LONG_VALUE_SUM, STRING_VALUE_MAX, STRING_VALUE_MIN, UNIQ_VALUE_COUNT, VALUE_HISTOGRAM |
Fields inherited from interface org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorDescriptor |
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ONE, TYPE_SEPARATOR |
Constructor Summary | |
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AggregateWordHistogram.AggregateWordHistogramPlugin()
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Method Summary | |
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java.util.ArrayList<java.util.Map.Entry<Text,Text>> |
generateKeyValPairs(java.lang.Object key,
java.lang.Object val)
Parse the given value, generate an aggregation-id/value pair per word. |
Methods inherited from class org.apache.hadoop.mapred.lib.aggregate.ValueAggregatorBaseDescriptor |
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configure, generateEntry, generateValueAggregator |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public AggregateWordHistogram.AggregateWordHistogramPlugin()
Method Detail |
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public java.util.ArrayList<java.util.Map.Entry<Text,Text>> generateKeyValPairs(java.lang.Object key, java.lang.Object val)
generateKeyValPairs
in interface ValueAggregatorDescriptor
generateKeyValPairs
in class ValueAggregatorBaseDescriptor
key
- input keyval
- input value
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