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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-3193) TwoPhaseCommit interface
Date Mon, 13 Jun 2011 15:47:52 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13048605#comment-13048605
] 

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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