Shai Erera created LUCENE-4972:
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Summary: DirectoryTaxonomyWriter makes a commit even if no changes
were made
Key: LUCENE-4972
URL: https://issues.apache.org/jira/browse/LUCENE-4972
Project: Lucene - Core
Issue Type: Bug
Components: modules/facet
Reporter: Shai Erera
Assignee: Shai Erera
Priority: Minor
Fix For: 5.0, 4.4
Now that IndexWriter allows committing changes even if the only change is
setCommitData, DirectoryTaxonomyWriter creates empty commits because whenever
you call commit/close, it sets as commitData the indexEpoch, thereby creating
unnecessary commit points.
I think that DirTaxoWriter should track if the index is dirty ... or preferably
get that from IndexWriter (i.e. getChangeCount or something). I'll create a
test case exposing the bug and then fix DTW.
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