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From "Shai Erera (JIRA)" <>
Subject [jira] [Commented] (LUCENE-3193) TwoPhaseCommit interface
Date Sun, 12 Jun 2011 03:47:51 GMT


Shai Erera commented on LUCENE-3193:

This is basically ready for commit. I'd appreciate a review of the definitions plus TPCTool
impl. I will give it a couple of days before I commit. We can always fix issues later.

> TwoPhaseCommit interface
> ------------------------
>                 Key: LUCENE-3193
>                 URL:
>             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
> 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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