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From aaron morton <>
Subject Re: Concerns about Cassandra upgrade from 1.0.6 to 1.1.X
Date Mon, 16 Jul 2012 09:34:26 GMT
The advice Tyler gave is the correct. Do a rolling upgrade, and shapshot if you want to have
a rollback. 

My personal approach is to upgrade a node or two and let run for a few hours. Just to avoid
the situation where you uprade every node and then discover some problem that causes wailing
and gnashing of teeth. 

In general, node by node:
* drain
* snapshot
* shutdown 
* upgrade
* turn on. 

When they are all up I snap shot again if there is space. Then run upgradetables. 


Aaron Morton
Freelance Developer

On 13/07/2012, at 11:06 AM, Roshan wrote:

> Thanks Aaron. My major concern is upgrade node by node. Because currently we
> are using 1.0.6 in production and plan is to upgrade singe node to 1.1.2 at
> a time.
> Any comments?
> Thanks.
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