HyperLogLog - fork or replacement?

[rschwietzke]

We use https://github.com/aggregateknowledge/java-hll for the reporting to count unique urls efficiently. Sadly, the HLL project is 10 years old and not alive.

Let's see if we can use https://datasketches.apache.org/docs/Community/Downloads.html with the HLL or an alternative from that universe: https://datasketches.apache.org/docs/HLL/HLL.html.

We can also check https://github.com/prasanthj/hyperloglog

As a last resort, we can fork and slim it.

We always have to check the performance impact when replacing it using some large results of our customers.