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From Shai Erera <ser...@gmail.com>
Subject Re: Problem doing backup using the SnapshotDeletionPolicy class
Date Fri, 14 Aug 2009 19:37:47 GMT
I think you should also delete files that don't exist anymore in the index,
from the backup?

Shai

On Fri, Aug 14, 2009 at 10:02 PM, Michael McCandless <
lucene@mikemccandless.com> wrote:

> Could you boil this down to a small standalone program showing the problem?
>
> Optimizing in between backups should be completely fine.
>
> Mike
>
> On Fri, Aug 14, 2009 at 2:47 PM, Lucas Nazário dos
> Santos<nazario.lucas@gmail.com> wrote:
> > Hi,
> >
> > I'm using the SnapshotDeletionPolicy class to backup my index. I
> basically
> > call the snapshot() method from the class SnapshotDeletionPolicy at some
> > point, get a list of files that changed, copy then to the backup folder,
> and
> > finish by calling the release() method.
> >
> > The problem arises when, in between backups, I optimize the index by
> opening
> > it with the IndexWriter class and calling the optimize() method. When I
> > don't optimize in between backups, here is what happens:
> >
> > The first backup copies the segment composed by the files _0.cfs and
> > segments_2. The second backup copies the files _1.cfs and segments_3, and
> > the third backup copies the files _2.cfs e segments_4. I can open the
> backup
> > folder with Luke without problems.
> >
> > When I do optimize in between backups, the copies are as follow:
> >
> > The first backup copies the segment composed by the files _0.cfs and
> > segments_2. The second backup copies the files _1.cfs and segments_3, and
> > the third backup copies the files _3.cfs e segments_5. In this case, when
> I
> > try to open the backup folder, Luke gives a message saying that it can't
> > find the file _2.cfs.
> >
> > My question is: how can I backup my index using the
> SnapshotDeletionPolicy
> > and having to optimize the index in between backups? Am I using the right
> > backup strategy?
> >
> > Thanks,
> > Lucas
> >
>
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