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https://issues.apache.org/jira/browse/LUCENE-4575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shai Erera updated LUCENE-4575:
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Attachment: LUCENE-4575.patch
Patch adds setCommitData to IndexWriter and increase changeCount as well as
sets that commitData on segmentInfos. It also adds a test to verify the
behavior.
Regarding back-compat - I prefer to nuke commit(data) and prepcommit(data), in
exchange for this API, for both trunk and 4.x.
This patch however supports the old commit/prepcommit(data) API, but I think
that it will be simpler if we just nuke these API. The migration to the new API
is a no-brainer, just call setCommitData before your commit().
I don't intend to commit it yet, depending on how we decide to handle
back-compat. If we decide to keep the back-compat support, I want to move the
commit(data) and prepCommit(data) impls to their respective no-data versions,
and then have these API deprecated and call setCommitData() followed by the
respective no-data version.
> Allow IndexWriter to commit, even just commitData
> -------------------------------------------------
>
> Key: LUCENE-4575
> URL: https://issues.apache.org/jira/browse/LUCENE-4575
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/index
> Reporter: Shai Erera
> Priority: Minor
> Attachments: LUCENE-4575.patch
>
>
> Spinoff from here
> http://lucene.472066.n3.nabble.com/commit-with-only-commitData-td4022155.html.
> In some cases, it is valuable to be able to commit changes to the index, even
> if the changes are just commitData. Such data is sometimes used by
> applications to register in the index some global application
> information/state.
> The proposal is:
> * Add a setCommitData() API and separate it from commit() and prepareCommit()
> (simplify their API)
> * When that API is called, flip on the dirty/changes bit, so that this gets
> committed even if no other changes were made to the index.
> I will work on a patch a post.
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