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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4576) Remove CachingWrapperFilter recacheDeletes boolean
Date Tue, 27 Nov 2012 13:17:58 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13504599#comment-13504599
] 

Uwe Schindler commented on LUCENE-4576:
---------------------------------------

+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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