how is it possible that just the norms for a single field were causing such
a massive index size increment in your case ?
In your case I think it was for a field type used by multiple fields, but
it's still suspicious in my opinions,
norms should be that big.
If I remember correctly in old versions of Solr before the drop of index
time boost, norms were containing both an approximation of the length of the
field + index time boost.
From your mailing list problem you moved from 10 Gb to 300 Gb.
It can't be just the norms, are you sure you didn't face some bug ?
Search Consultant, R&D Software Engineer, Director
Sease Ltd. - www.sease.io
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