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From "Shai Erera (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-4972) DirectoryTaxonomyWriter makes a commit even if no changes were made
Date Thu, 02 May 2013 06:12:16 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-4972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shai Erera updated LUCENE-4972:
-------------------------------

    Attachment: LUCENE-4972.patch

Patch adds isDirty flag to DTW and tests. I think it's ready, but would appreciate a review.
                
> 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
>
>         Attachments: LUCENE-4972.patch
>
>
> 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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