Quick question: Does ES support clusters with mixed versions (to do a 
rolling restart during an upgrade)? Is there a known process for upgrading 
a cluster?

Thank you!

Ankit

On Wednesday, January 7, 2015 9:46:50 AM UTC-8, David Pilato wrote:
>
> It’s most likely because on your dev system, you are running out of disk 
> space.
> Elasticsearch 1.4.x does not allocate replicas if you have more than 85% 
> disk usage.
> You can change this settings by modifying for example elasticsearch.yml 
> and set:
>
> cluster.routing.allocation.disk.watermark.low: 1gb
> cluster.routing.allocation.disk.watermark.high: 500mb
>
> Regarding your question, I would go for 1.4.
>
> HTH
>
> -- 
> *David Pilato* | *Technical Advocate* | *Elasticsearch.com 
> <http://Elasticsearch.com>*
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>
>  
> Le 7 janv. 2015 à 18:41, Bhumir Jhaveri <bhum...@gmail.com <javascript:>> 
> a écrit :
>
> I am planning to upgrade from ES 1.2.2 to ES 1.4.2 or 1.3.9 or whichever 
> is the most latest (stable) in 1.3 series - so should I go for 1.4 or 
> should stay with 1.3?
> the reason why I am not thinking about absolute upgrade to 1.4 is just so 
> that if certain things like shards allocations to different node/s suddenly 
> doesnt work or may be I am wrong too - I mean this type of sudden and 
> obvious things just stops working - I am still new to ES world and not 
> knowing ES fully.
>
> Not sure - need opinions on your experience if any?
>  
>
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