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https://issues.apache.org/jira/browse/LUCENE-2468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12868959#action_12868959
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Shay Banon commented on LUCENE-2468:
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Another quick question Mike, what do you think about the ability to know when a
"cache key" is actually closed so it can be removed from a cache? Similar in
concept to the eviction done from the field cache in trunk by readers, but open
so other Reader#cacheKey based caches (which is the simplest way to do caching
in Lucene) can use.
> reopen on NRT reader should share readers w/ unchanged segments
> ---------------------------------------------------------------
>
> Key: LUCENE-2468
> URL: https://issues.apache.org/jira/browse/LUCENE-2468
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Yonik Seeley
> Assignee: Michael McCandless
> Attachments: CacheTest.java, DeletionAwareConstantScoreQuery.java,
> LUCENE-2468.patch, LUCENE-2468.patch
>
>
> A repoen on an NRT reader doesn't seem to share readers for those segments
> that are unchanged.
> http://search.lucidimagination.com/search/document/9f0335d480d2e637/nrt_and_caching_based_on_indexreader
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