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From "Ryan McKinley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2649) FieldCache should include a BitSet for matching docs
Date Sun, 26 Sep 2010 23:35:32 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12915074#action_12915074
] 

Ryan McKinley commented on LUCENE-2649:
---------------------------------------

bq. If that were true, it would have broken solr in multiple places

What is an example?  The only thing I have seen is stuff that tries one parser and if it throws
an exception, tries another (that is supported)

As is, the cached value keeps the hash code for the parser created the values.  If we validate
(true by default) then it checks that the passed in hash code matches the one that is stored.
 Perhaps different Parsers are returning the same hashCode?    

Does it make sense to create a different key depending on what Parser we use?  Is it normal
to interpret the same field multiple different ways?

> FieldCache should include a BitSet for matching docs
> ----------------------------------------------------
>
>                 Key: LUCENE-2649
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2649
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Search
>            Reporter: Ryan McKinley
>            Assignee: Ryan McKinley
>             Fix For: 4.0
>
>         Attachments: LUCENE-2649-FieldCacheWithBitSet.patch, LUCENE-2649-FieldCacheWithBitSet.patch,
LUCENE-2649-FieldCacheWithBitSet.patch, LUCENE-2649-FieldCacheWithBitSet.patch, LUCENE-2649-FieldCacheWithBitSet.patch,
LUCENE-2649-FieldCacheWithBitSet.patch
>
>
> The FieldCache returns an array representing the values for each doc.  However there
is no way to know if the doc actually has a value.
> This should be changed to return an object representing the values *and* a BitSet for
all valid docs.

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