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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