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https://issues.apache.org/jira/browse/LUCENE-4576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13504599#comment-13504599
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Uwe Schindler commented on LUCENE-4576:
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+1. While working on random access filters, I removed the cache options
completely, but Mike readded them later (I have to lookup the issue number).
In my opinion, Robert is right: If you don't have a static index, the chahing
of deletes is horrible, as it invalidates the cache on every delete. If you
have a static index, you should expungedeletes it, so all acceptDocs will be
null and BitsFilteredDocIdSet (used by the Cache to apply deletes) with be a
no-op.
> Remove CachingWrapperFilter recacheDeletes boolean
> --------------------------------------------------
>
> Key: LUCENE-4576
> URL: https://issues.apache.org/jira/browse/LUCENE-4576
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Robert Muir
>
> I think this option is bad news, its just a trap that causes caches to be
> uselessly invalidated.
> If you really have a totally static index then just expunge your deletes.
> Let's remove the option and complexity.
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