Woops -- disregard this! Chris' approach will work. And, we don't
need addParallelIndices!
Mike
Michael McCandless wrote:
I don't think this will do the right thing in this case, because
addIndexes "appends" the documents from all indices together.
Whereas John wants to "merge in" a new field into all docs in an
existing index.
Really what we need is a new "addParallellIndices" method. I
think, conceptually, it's really not that hard to do ("it's just
software"), especially if the fields are completely orthogonal
(which is the case here, I think)? We would need a variant of
SegmentMerger, that instead of appending everything, would "splice"
the indices together, doc by doc. The posting lists should be
especially simple since each field is contiguous in the prx/frq files.
Mike
Chris Hostetter wrote:
: I have to keep one index though. Is there a way to reproduce an
index from
: an indexReader?
asuming you have indexes that work in conjunction with eachther they
way you want when using ParallelReader, you should (in theory) be
able to
use...
ParallelReader r = ...;
IndexWriter w = new IndexWRiter(...);
w.addIndexes(new IndexReader[] { r });
w.close();
...to "combine" those indexes into a single physical index. but i've
never personally tried it. there may be quirks about
ParallelReader that
prevent this from working.
-Hoss
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