Approximate cardinality estimation with HyperLogLog, as a Hive function
Java
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src/main/java/com/github/mlnick
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LICENSE.txt
README.markdown
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README.markdown

An implementation of the HyperLogLog approximate cardinality estimation algorithm (as well as Linear Counting), as a Hive User-defined Aggregation Function (UDAF).

Relies on stream-lib for implementation of the relevant algorithms.

See the Wiki for usage instructions.