'SOLR Document with 10000 Index fields

The use case I have is to allows users to build a custom report out of the 10000 fields in our database.

I have read various documentation

I'm not sure if SOLR could handle 10000 indexed field and 500K documents.
All how much time does it take to update a document which has 10K indexed field
Indexing 10K fields, how much of storage will it take? Given a document without index takes 50Kb.

solr lucene report

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