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https://issues.apache.org/jira/browse/OAK-6683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davide Giannella closed OAK-6683.
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Bulk close for 1.7.8
> Use less resource intensive method to determine number of docs in lucene index
> ------------------------------------------------------------------------------
>
> Key: OAK-6683
> URL: https://issues.apache.org/jira/browse/OAK-6683
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: lucene
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Priority: Minor
> Fix For: 1.8, 1.7.8
>
>
> Currently LuceneIndexInfoProvider opens a DirectoryReader via OakDirectory
> which leads to very high memory consumption due to current design of
> OakDirectory (see OAK-3132).
> As we just need to determine the numDocs we can directly use the
> [SegmentInfos|http://lucene.apache.org/core/4_7_1/core/org/apache/lucene/index/SegmentInfos.html]
> to determine this information in a more efficient manner and avoid creating
> whole DirectoryReader
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