Hi Paul,

Hot backup is OK.  There was a thread on this topic yesterday and the day
before.  But you should always try running from backup regardless of what
anyone says here, because if you have to do that one day.... you want to
know you verified it :)

Otis
--
Solr & ElasticSearch Support
http://sematext.com/





On Wed, Jan 9, 2013 at 3:12 PM, Paul Jungwirth
<p...@illuminatedcomputing.com>wrote:

> > Are you sure a commit didn't happen between?
> > Also, a background merge might have happened.
> >
> > As to using a backup, you are right, just stop solr,
> > put the snapshot into index/data, and restart.
>
>
> This was mentioned before but seems not to have gotten any attention: can't
> you use the ReplicationHandler by just going to a URL like this?:
>
>
>
> http://host:8080/solr/replication?command=backup&location=/home/jboss/backup
>
> The 2nd edition Lucene in Action book describes a way to take hot backups
> without stopping your IndexWriter (pp. 374ff), and it appears that
> ReplicationHandler uses a similar strategy if I'm reading the code
> correctly (Solr 3.6.1; I guess v4 is the same).
>
> It'd be great if someone more knowledgeable could confirm that you can use
> the ReplicationHandler to take hot backups. I'm surprised to see such a
> long thread about starting/stopping index jobs when there is such an easy
> answer. Or am I mistaken and at risk of corrupt backups if I use it?
>
> Thanks,
> Paul
>
> --
> _________________________________
> Pulchritudo splendor veritatis.
>

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