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https://issues.apache.org/jira/browse/LUCENE-3193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13048605#comment-13048605
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Michael McCandless commented on LUCENE-3193:
--------------------------------------------
Looks great Shai!
> TwoPhaseCommit interface
> ------------------------
>
> Key: LUCENE-3193
> URL: https://issues.apache.org/jira/browse/LUCENE-3193
> Project: Lucene - Java
> Issue Type: New Feature
> Components: core/index
> Reporter: Shai Erera
> Assignee: Shai Erera
> Fix For: 3.3, 4.0
>
> Attachments: LUCENE-3193.patch, LUCENE-3193.patch
>
>
> I would like to propose a TwoPhaseCommit interface which declares the methods
> necessary to implement a 2-phase commit algorithm:
> * prepareCommit()
> * commit()
> * rollback()
> The prepare/commit ones have variants that take a (Map<String,String>
> commitData) following the ones we have in IndexWriter.
> In addition, a TwoPhaseCommitTool which implements a 2-phase commit amongst
> several TPCs.
> Having IndexWriter implement that interface will allow running the 2-phase
> commit algorithm on multiple IWs or IW + any other object that implements the
> interface.
> We should mark the interface @lucene.internal so as to not block ourselves in
> the future. This is pretty advanced stuff anyway.
> Will post a patch soon
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