Hi,
You could (theoretically) reduce the down-time to zero using a 'swap'
command:
http://wiki.apache.org/solr/CoreAdmin?highlight=%28swap%29#SWAP
Cheers
Henrib


muneeb wrote:
> 
> Hi,
> 
> I have indexed almost 7 million articles on two separate cores, each with
> their own conf/ and data/ folder, i.e. they have their individual index.
> 
> What I normally do is, use core0 for querying and core1 for any updates
> and once updates are finished i copy the index of core1 to core0's data
> folder. I know this isn't an efficient way of doing this, since this
> brings a downtime on my search service for a couple of minutes. 
> 
> I was wondering if its possible to switch between cores dynamically
> (keeping my current setup in mind) in such a way that there is no downtime
> at all during switching.
> 
> Thanks very much in advance.
> -M  
> 

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