I know this has been asked a bunch and I see the answer regarding fetching
only some fields from a query.
However, my documents have thousands of dynamic fields. I cannot define
them in a mapping with "stored: True".
The documents are megabytes in size. I do not want elastic search returning
a 45MB _source result for each
and then pluck fields from there.
Is it possible to query and retrieve only a few fields from results? I do
not want _source....too big....
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