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From "Martijn van Groningen (Commented) (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3360) Move FieldCache to IndexReader
Date Fri, 30 Sep 2011 13:16:45 GMT


Martijn van Groningen commented on LUCENE-3360:

I don't see a patch for LUCENE-3443 yet. Maybe we can forward port [this issue including FieldCache.getDocsWithField()
to trunk|]? 
> Move FieldCache to IndexReader
> ------------------------------
>                 Key: LUCENE-3360
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Improvement
>            Reporter: Martijn van Groningen
>             Fix For: 3.5, 4.0
>         Attachments: LUCENE-3360-3x.patch, LUCENE-3360-3x.patch, LUCENE-3360-3x.patch,
LUCENE-3360.patch, LUCENE-3360.patch, LUCENE-3360.patch, LUCENE-3360.patch, LUCENE-3360.patch,
LUCENE-3360.patch, LUCENE-3360.patch
> Move the static FieldCache.DEFAULT field instance to atomic IndexReaders, so that FieldCache
insanity caused by the WeakHashMap no longer occurs.
> * Add a new method to IndexReader that by default throws an UOE:
> {code}public FieldCache getFieldCache(){code}
> * The SegmentReader implements this method and returns its own internal FieldCache implementation.
This implementation just uses a HashMap<Entry<T>,Object>> to store entries.
> * The SlowMultiReaderWrapper implements this method as well and basically behaves the
same as the current FieldCacheImpl.
> This issue won't solve the insanity that comes from inconsistent usage of a single field
(for example retrieve both int[] and DocTermIndex for the same field). 

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