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https://issues.apache.org/jira/browse/SOLR-2290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12974224#action_12974224
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Jason Rutherglen commented on SOLR-2290:
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I think it'll require creating a new sub-element of mainIndex and indexDefaults
called perhaps indexWriterConfig? Because attributes such as unlockOnStartup
and reopenReaders cannot be injected in, and we probably don't want to mix
injected properties with non-injected properties?
> the termsInfosDivisor for readers opened by indexWriter should be
> configurable in Solr
> --------------------------------------------------------------------------------------
>
> 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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