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https://issues.apache.org/jira/browse/LUCENE-2138?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12788666#action_12788666
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Michael McCandless commented on LUCENE-2138:
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I think LUCENE-2026 should be largely unaffected by flex indexing, except that
it now accepts the Codecs instance and must thread it down.
Flex indexing lives "under" IndexWriter, except when the segment writing needs
to create the segment, and then that part of IndexWriter is a consumer of the
flex API.
What makes me nervous about just doing this patch as-is, is that it's a change
to IW's public API. For such changes I think it's worth spending some more
time, looking forward, to how best to expose that API. I don't mind making
such changes internal to lucene ("progress not perfection"), but for changes to
the public API, we should give it some thought.
There's been a number of requests (many from you!0 for customizing how readers
are created (what class is used), what components they contain, how to
associate caches with them, being notified when merges complete, being able to
make deletions against them directly, controlling warming, etc. I'd like to
put all these on the table and understand how we can make a coherent change,
and pulling out ReaderPool (so that eg it's also shared with IndexReader.open)
seems roughly like what we need to do to address these. LUCENE-2133 is also
related here.
> Allow custom index readers when using IndexWriter.getReader
> -----------------------------------------------------------
>
> Key: LUCENE-2138
> URL: https://issues.apache.org/jira/browse/LUCENE-2138
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Affects Versions: 3.0
> Reporter: Jason Rutherglen
> Priority: Minor
> Fix For: 3.1
>
> Attachments: LUCENE-2138.patch
>
>
> This is needed for backwards compatible support with Solr, and is a spin-off
> from SOLR-1606.
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