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https://issues.apache.org/jira/browse/LUCENE-3441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13500219#comment-13500219
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Shai Erera commented on LUCENE-3441:
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bq. While I could just share the instance
Sorry, forgot to complete the idea -- simply sharing the instances currently
won't work, b/c e.g. when TR.close() is called, the cache is clear()'ed, which
will affect the other instance as well. A simple solution would be to remove
the 'final' modifier from the cache member, and nullify the cache on close(),
instead of clear()-ing.
That way, if we rely on TR instances that are reopened to be immediately closed
by the caller, and sharing the cache instances may not be so bad.
> Add NRT support to LuceneTaxonomyReader
> ---------------------------------------
>
> Key: LUCENE-3441
> URL: https://issues.apache.org/jira/browse/LUCENE-3441
> Project: Lucene - Core
> Issue Type: New Feature
> Components: modules/facet
> Reporter: Shai Erera
> Assignee: Shai Erera
> Priority: Minor
> Attachments: LUCENE-3441.patch
>
>
> Currently LuceneTaxonomyReader does not support NRT - i.e., on changes to
> LuceneTaxonomyWriter, you cannot have the reader updated, like
> IndexReader/Writer. In order to do that we need to do the following:
> # Add ctor to LuceneTaxonomyReader to allow you to instantiate it with
> LuceneTaxonomyWriter.
> # Add API to LuceneTaxonomyWriter to expose its internal IndexReader
> # Change LTR.refresh() to return an LTR, rather than void. This is actually
> not strictly related to that issue, but since we'll need to modify refresh()
> impl, I think it'll be good to change its API as well. Since all of facet API
> is @lucene.experimental, no backwards issues here (and the sooner we do it,
> the better).
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