rmuir commented on PR #12013:
URL: https://github.com/apache/lucene/pull/12013#issuecomment-1348842317

   Yeah, I'm highly suspicious of this cache. I dug into this and found that 
previously stored fields (!) were used for this lookup. So no surprise there 
was a cache around it, since this is a slow approach!!!
   
   But @gautamworah96 fixed this, and these days BinaryDocValues are used 
instead: see #10490
   
   IMO there is no sense in caching BinaryDocValues lookups into the heap, it 
is already mmap'd and the operating system will do this.


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