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https://issues.apache.org/jira/browse/LUCENE-5320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13886521#comment-13886521
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Michael McCandless commented on LUCENE-5320:
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+1, thanks Shai!
> Create SearcherTaxonomyManager over Directory
> ---------------------------------------------
>
> Key: LUCENE-5320
> URL: https://issues.apache.org/jira/browse/LUCENE-5320
> Project: Lucene - Core
> Issue Type: New Feature
> Components: modules/facet
> Reporter: Shai Erera
> Attachments: LUCENE-5320.patch
>
>
> SearcherTaxonomyManager now only allows working in NRT mode. It could be
> useful to have an STM which allows reopening a SearcherAndTaxonomy pair over
> Directories, e.g. for replication. The problem is that if the thread that
> calls maybeRefresh() is not the one that does the commit(), it could lead to
> a pair that is not synchronized.
> Perhaps at first we could have a simple version that works under some
> assumptions, i.e. that the app does the commit + reopen in the same thread in
> that order, so that it can be used by such apps + when replicating the
> indexes, and later we can figure out how to generalize it to work even if
> commit + reopen are done by separate threads/JVMs.
> I'll see if SearcherTaxonomyManager can be extended to support it, or a new
> STM is required.
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