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From "Shai Erera (JIRA)" <j...@apache.org>
Subject [jira] [Created] (LUCENE-3193) TwoPhaseCommit interface
Date Sat, 11 Jun 2011 12:24:59 GMT
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


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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