Michael McCandless

> We are still a ways away (from seeing Lucene fully utilize available hardware concurrency available at search time to reduce query latencies) For example: query concurrency is still tied...

+1 to backport the deprecation message/tags to 9.x, even if we cannot fully remove our own internal usage of the deprecated APIs before releasing 10.0. The two can / should...

Oh how nice it would be to have async profiling out of the box in a Lucene clone @markrmiller!

Thanks @nitirajrathore! This class has since moved to `luceneutil` I think? Do you know if this bug was resolved there? If not, could you maybe port this PR over to...

Thanks @asalamon74 -- looks like we shouldn't fix this in Lucene, but instead Solr.

@jpountz is this still relevant? There have been lots of optos to `WANDScorer` lately... maybe this is already essentially done?

@gsmiller what should we do with this PR? Are you working on the alternative (wrapping?) approach? Should we close this PR and later open that approach? Or leave this one...

> but I don't think WordDelimiterGraphFilter is a full replacement for WordDelimiterFilter since it can't be used in conjunction with other filters that consume or produce graphs, like SynonymGraphFilter. Yeah...

`BlockTree` is kinda crazy how it builds up the final FST: each little backwards-recursive chunk of term-space stores its subset of terms into a baby FST, and then on grouping...

> all the giant-baby FSTs Heh, this made me remember the awesome character, [Bôh](https://hero.fandom.com/wiki/B%C3%B4h), from the incredible movie [Spirited Away](https://en.wikipedia.org/wiki/Spirited_Away):