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From leerho <lee...@gmail.com>
Subject Re: ItemsSketch Aggregator in druid-datasketches extension
Date Thu, 02 Sep 2021 23:55:34 GMT
We are busy at the moment trying to get new releases of datasketches-memory
followed by a new release of datasketches-java out the door.  This pair of
releases will give us compatibility with JDK 8 through JDK 13.  After that,
we will work with the Druid team to update the datasketches adaptor in
Druid, followed by a Druid release that can take advantage of this new

In order to enable the REQ sketch for Druid, it will have to be carefully
updated to enable off-heap (Direct) operation.  Then the Druid datasketches
adaptor will need to be updated to accommodate the new, off-heap REQ

As you can tell, this is quite a bit of work.  So contributions into this
effort would be greatly appreciated.  Interested?



On Wed, Sep 1, 2021 at 11:51 PM David Glasser <glasser@apollographql.com>

> On Thu, Aug 12, 2021 at 8:46 PM leerho <leerho@gmail.com> wrote:
> > The non-generic container sketches include the Theta sketch, the double
> > valued Tuple sketch, the double valued Quantiles sketch, the float valued
> > KLL and REQ sketches and the long valued FrequentItemsSketch.  Of these,
> > the Theta family and our original Quantiles sketch already have Direct
> > implementations and are already part of Druid.
> Out of curiosity, do you know if anyone is working on integrating the
> REQ sketch into Druid?
> --dave
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