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From "Jason Rutherglen" <jason.rutherg...@gmail.com>
Subject Re: Obtain IndexCommits from directory
Date Tue, 17 Jun 2008 11:00:25 GMT
> reopen should just upgrade to the latest commit?

Makes sense

> commit was deleted IOException

Seems like proper behavior


On Tue, Jun 17, 2008 at 5:39 AM, Michael McCandless <
lucene@mikemccandless.com> wrote:

>
> This API doesn't yet exist.
>
> I do agree it would be useful (necessary) for users who have a customized
> deletion policy that keeps around certain prior commits, and wants to
> selectively open readers against these past commits.  I like your proposed
> methods; I can take this.
>
> On reopen(): I think if you call this on an IndexReader explicitly opened
> against a prior commit, it should just upgrade to the latest commit?
>
> Also, if you open an explicit commit, it's entirely possible you'll hit an
> IOException because that commit was deleted after you listed it and before
> you opened it.  Normally, IndexReader.open would retry in such a case (to
> get the new commit), but it would not do so, and just throw the IOException,
> if given an explicit commit to open.
>
> Mike
>
>
> Jason Rutherglen wrote:
>
>  Need to be able to get a list of IndexCommits for a directory.  Also open
>> an IndexReader for each IndexCommit.  Am thinking of API such as.  I suppose
>> this could cause problems for reopen.
>>
>> IndexCommit[] commits = IndexReader.listCommitPoints(Directory directory);
>>
>> and
>>
>> IndexReader.open(IndexCommit commit, Directory directory);
>>
>>
>
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