gerlowskija commented on PR #1638:
URL: https://github.com/apache/solr/pull/1638#issuecomment-2050163434

   About to take a look at the code and see if I can help with the v2 side of 
things, but before I dive into that I figured it was worth asking:
   
   Does `size-estimator-lucene-solr.xls` actually work for folks?  Do you use 
it regularly @igiguere ?  Have you found it to be pretty accurate?  Any other 
folks have experience with it?
   
   I'm happy to be wrong if we have several groups of folks out there in the 
wild that are using it, but my initial reaction is to be a little skeptical 
that it's reliable enough to incorporate into Solr.
   
   Primarily because, well, modeling resource-usage is a really really tough 
problem.  There's a reason that the community's only response to sizing 
questions has always been pretty much "You'll have to Guess-and-Check".
   
   And secondarily, because the spreadsheet this is all based off of was added 
in 2011 and hasn't really seen much iteration in the decade since.  There's an 
absolute ton that's changed in both Lucene and Solr since then.


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