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From Michael McCandless <>
Subject Re: Taking backup of a Lucene index
Date Thu, 18 Apr 2013 17:40:29 GMT
On Thu, Apr 18, 2013 at 12:32 AM, Hien Luu <> wrote:
> It is difficult to associate a class named SnapshotDeletionPolicy with taking backup
of Lucene index.

Naming is the hardest part :)

It's a snapshot in the same sense as the ZFS file system, or a Network
Appliance file server.

What's hard here is this deletion policy can be used for things other
than hot backups, eg protecting commit poings so you don't hit Stale
NFS File Handle when searching over NFS, keeping a point-in-time
searchable commit point alive with your index at different stages,
goes into more detail.

Mike McCandless

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