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From Koji Sekiguchi <>
Subject Re: getting the number of updated documents
Date Thu, 10 Mar 2011 22:48:01 GMT
>> Does IndexWriter (or somewhere else) have the method such that
>> it gets the number of updated documents before commit?
> you have maxDocs which gives you the maxdocid-1 but this might not be
> super accurate since there might have been merges going on in the
> background. I am not sure if this number you are asking for will
> really help you with what you are trying todo.
> If you want to rollback to your previous version why don't you keep
> that commit point around and just open it again if something goes
> wrong. You can specify a DeletionPolicy that keeps your opimized index
> around until you nuke it in the case everything goes ok?
> simon

Hi Simon,

Uh, it sounds cool! I'll try to implement a DeletionPolicy and
see if it solves my problem.

Many thanks,


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