The size of your index isn't a very useful number without knowing a
significant amount about the structure of your index. Depending upon what's
stored, what's indexed and what kind of searching you're doing (e.g.
sorting?) it varies. About all we can say is that you'll probably need less
than 100G.
Hi
24Gb RAM for a 100Gb index is likely to be plenty. You don't have a
huge amount of control over what lucene loads in memory, but take a
look at termInfosIndexDivisor in IndexReader. And I believe that
omitting field norms (Field.setOmitNorms) may help too. Googling for
"lucene memory usage"
