Algebird's HyperLogLog support for Facebook Presto (prestodb.io).
There are two types of functions, aggregation and scalar.
merge(<hll: HLL>) -> HLL
create_hll(<element:VARCHAR>, <bits: BIGINT>) -> HLL
cardinality(<hll: HLL>) -> BIGINT
Running mvn clean package will generate a jar file as well as a zip file
containing this plugin along with all of its dependencies.
cd /usr/lib/presto/plugin
curl -sLO https://github.com/robotblake/presto-hyperloglog/releases/download/$PRESTO_VERSION/presto-hyperloglog-$PRESTO_VERSION.zip
unzip presto-hyperloglog-$PRESTO_VERSION.zip
rm presto-hyperloglog-$PRESTO_VERSION.zip