alamb commented on PR #115:
URL: https://github.com/apache/datafusion-site/pull/115#issuecomment-3339480401

   
   
   > Maybe this is too much hedging, but: this sounds like we get orders of 
magnitude gains always. But that probably depends on the query!
   
   yeah, I think specifically it really helps:
   1. When the files are entirely remote (on object_store)
   1. The queries are relatively low latency (10s of ms) as parsing the footer 
can be substantial amount of the overall query processing time
   
   I'll try and add that detail to the post


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