fcofdez commented on PR #15718:
URL: https://github.com/apache/lucene/pull/15718#issuecomment-3925787660

   > Though looking at the behavior in IndexingChain that always calls 
startStoredFields, and the logic [in 
StoredFieldsConsumer](https://github.com/apache/lucene/blob/f12e44b6515a25933dc5e9316df72d8b093eae12/lucene/core/src/java/org/apache/lucene/index/StoredFieldsConsumer.java#L58-L61),
 it looks like we do require that startDocument() and finishDocument() get 
called for each doc. That's a bummer.
   
   Yes, I think that's a contract that we have to keep. Alternatively we could 
use a different approach and just write a flag in the stored fields metadata 
where we track that there are no stored fields, but we can still respond calls 
to the `#document` methods. But that seems like a deeper change than this and 
the remaining overhead should be low compared to all the seeks + reads that we 
do now.


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