Enable setting the terms index divisor used by IndexWriter whenever it opens
internal readers
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Key: LUCENE-2356
URL: https://issues.apache.org/jira/browse/LUCENE-2356
Project: Lucene - Java
Issue Type: Bug
Reporter: Michael McCandless
Fix For: 3.1
Opening a place holder issue... if all the refactoring being discussed don't
make this possible, then we should add a setting to IWC to do so.
Apps with very large numbers of unique terms must set the terms index divisor
to control RAM usage.
(NOTE: flex's RAM terms dict index RAM usage is more efficient, so this will
help such apps).
But, when IW resolves deletes internally it always uses default 1 terms index
divisor, and the app cannot change that. Though one workaround is to call
getReader(termInfosIndexDivisor) which will pool the reader with the right
divisor.
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