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From "Shai Erera (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-4060) DirectoryTaxonomyWriter.addTaxonomies does not work well in a multi-threaded environment
Date Wed, 16 May 2012 06:46:10 GMT
Shai Erera created LUCENE-4060:
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             Summary: DirectoryTaxonomyWriter.addTaxonomies does not work well in a multi-threaded
environment
                 Key: LUCENE-4060
                 URL: https://issues.apache.org/jira/browse/LUCENE-4060
             Project: Lucene - Java
          Issue Type: Bug
          Components: modules/facet
            Reporter: Shai Erera
            Assignee: Shai Erera
             Fix For: 4.0, 3.6.1


DirTaxoWriter.addTaxonomies may lead to a corrupt taxonomy index if addCategory is called
in parallel. While reviewing the code, the following changes seemed to be required:

* Fix the bug
* Simplify addTaxonomies code -- it's very complicated, seems rather inefficient, and seems
to take care of more than is needed.
* The intention to support multiple taxonomies is unclear, especially since FacetsPayloadProcessor
can handle only one Directory and one OrdinalMap at a time. So I'd like to change the method
to addTaxonomy. I anyway don't see the reason to add multiple taxonomies at once, one can
call addTaxonomy several times.

I will post a patch soon.

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