the termsInfosDivisor for readers opened by indexWriter should be configurable
in Solr
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Key: SOLR-2290
URL: https://issues.apache.org/jira/browse/SOLR-2290
Project: Solr
Issue Type: New Feature
Reporter: Tom Burton-West
Priority: Minor
Solr allows users to set the termInfosIndexDivisor used by the indexReader
during search time in solrconfig.xml, but not in the indexReader opened by
the IndexWriter when indexing/merging.
When dealing with an index with a large number of unique terms, setting the
termInfosIndexDivisor at search time is helpful in reducing memory use. It
would also be helpful in reducing memory use during indexing/merging if it was
made configurable for indexReaders opened by indexWriter during
indexing/merging.
This thread contains some background:
http://www.lucidimagination.com/search/document/b5c756a366e1a0d6/memory_use_during_merges_oom
In the Lucene 3.x branch it looks like this is done in
IndexWriterConfig.setReaderTermsIndexDivisor, although there is also this
method signature in IndexWriter.java: IndexReader getReader(int
termInfosIndexDivisor)
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