DirectoryTaxonomyWriter can lose the INDEX_CREATE_TIME property, causing
DirTaxoReader.refresh() to falsely succeed (or fail)
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Key: LUCENE-3794
URL: https://issues.apache.org/jira/browse/LUCENE-3794
Project: Lucene - Java
Issue Type: Bug
Components: modules/facet
Reporter: Shai Erera
Assignee: Shai Erera
Fix For: 3.6, 4.0
DirTaxoWriter sets createTime to null after it put it in the commit data once.
But that's wrong because if one calls commit(Map<>) twice, the second time
doesn't record the creation time. Also, in the ctor, if an index exists and
OpenMode is not CREATE, the creation time property is not read.
I wrote a couple of unit tests that assert this, and modified DirTaxoWriter to
always record the creation time (in every commit) -- that's the only safe way.
Will upload a patch shortly.
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