benwtrent commented on PR #15620:
URL: https://github.com/apache/lucene/pull/15620#issuecomment-3887378579

   @churromorales please, update the description on how deletes & updates are 
considered and the resulting behavior.
   
   Deletes aren't that large of a concern, I would expect merge with only 
expunging deletes will should as normal and deletes will be removed with 
"natural" merges.
   
   Updates generally then mean the document will be "reindexed" into a brand 
new segment. I could see this fitting in nicely if the updates occur to 
documents that have timestamps that are already within the same range. However, 
if not, then you end up with new segments with a hodgepodge of various 
timestamps. Basically, a bunch of unordered data. Which you do call out as 
being handled, but it should be specified that this also applies to document 
updates. 


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