[jira] [Created] (DATAFU-16) weighted reservoir sampling with exponential jumps UDF

[jian wang (JIRA)]

jian wang created DATAFU-16:
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             Summary: weighted reservoir sampling with exponential jumps UDF
                 Key: DATAFU-16
                 URL: https://issues.apache.org/jira/browse/DATAFU-16
             Project: DataFu
          Issue Type: New Feature
         Environment: Mac, Linux

pig-0.11
            Reporter: jian wang


Create a weightedReservoirSampleWithExpJump UDF to implement the weighted 
reservoir sampling algorithm with exponential jumps. Investigation is tracked 
in  https://github.com/linkedin/datafu/issues/80. This task is part of 
experiment of different weighted sampling algorithms.



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