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Used by MergeJoin . |
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UDF to get memory size of a tuple and extracts number of rows value from special tuple created by PoissonSampleLoader It is used by skewed join. |
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Partition reducers for skewed keys. |
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See "Skewed Join sampler" in http://wiki.apache.org/pig/PigSampler |
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Abstract class that specifies the interface for sample loaders |
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A loader that samples the data. |
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