[jira] [Created] (LUCENE-5320) Create SearcherTaxonomyManager over Directory

["Shai Erera (JIRA)" <ji...@apache.org>]

Shai Erera created LUCENE-5320:
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             Summary: 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


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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