postgresql-hll: the PostgreSQL extension adding HyperLogLog data structures seems pretty good, If we do counting directly in postgresDB.
On Fri, Aug 15, 2014 at 1:38 PM, Sa Li <[email protected]> wrote: > Hi, all > > Continue this topic, I am bit of confused whether I should implement the > hyperloglog in storm or perform the postgresql-hll extension in postgresDB, > if I can effectively count the uniques in postgresql-hll, and write into a > separate distinct count table, why would I implement that in storm? I know > some developers are implementing hll in storm, and I am just unclear what > the advantage to do that in storm than in database with hll-extension. > > thanks > > Alec > > > On Wed, Aug 13, 2014 at 4:37 PM, Sa Li <[email protected]> wrote: > >> Hi, All >> >> I am thinking to implement HyperLoglog by storm with KafkaSpout, and >> output not only the distinct counts, but also some kind of bitmap string, >> anyone did the similar job, a guide for start is highly appreciated. >> >> thanks >> >> Alec >> > >
