BlakeOrth commented on issue #19055:
URL: https://github.com/apache/datafusion/issues/19055#issuecomment-3608361345

   @alamb Can you help me understand the benefit of flattening the 
`Vec<ObjectMeta>` into individual rows?
   
   I'm concerned this could make the output table difficult to read (the 
`s3://clickhouse-public-datasets/hits_compatible/athena_partitioned/` dataset 
would result in 100 rows, for instance) and I'm not sure what benefit it would 
provide since the TTL and metadata size for each element of the `Vec` will be, 
by and large, uniform. Additionally the cache (at least currently) evicts the 
entire `Vec` as opposed to individual entries, so we wouldn't expect any 
fragmentation issues with entries within a collection of metadatas.


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