You have linked to the 1.2 news file, which branched from 1.1 at some point. 

Look at the news file in the distribution you are installing or here 
https://github.com/apache/cassandra/blob/cassandra-1.1/NEWS.txt

Cheers

-----------------
Aaron Morton
Freelance Cassandra Developer
New Zealand

@aaronmorton
http://www.thelastpickle.com

On 11/02/2013, at 11:14 PM, Michal Michalski <mich...@opera.com> wrote:

> OK, thanks Aaron. I ask because NEWS.txt is not a big help in case of > 1.1.5 
> versions because there's no info on them in it (especially on 1.1.7 which 
> seems to be the most important one in this case, according to the DataStax' 
> upgrade instructions) ;-)
> 
> https://github.com/apache/cassandra/blob/trunk/NEWS.txt
> 
> M.
> 
> 
> W dniu 11.02.2013 11:05, aaron morton pisze:
>> You can always run them. But in some situations repair cannot be used, and 
>> in this case new nodes cannot be added. The news.txt file is your friend 
>> there.
>> 
>> As a general rule when upgrading a cluster I move one node to the new 
>> version and let it soak in for an hour or so. Just to catch any crazy. I 
>> then upgrade all the nodes and run through the upgrade table. You can 
>> stagger upgrade table to be every RF'th node in the cluster to reduce the 
>> impact.
> 
> 

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