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From Watanabe Maki <watanabe.m...@gmail.com>
Subject Re: Initial token - newbie question (version 1.0.8)
Date Wed, 11 Apr 2012 22:39:59 GMT
auto_bootstrap parameter has been removed and always enabled since 1.0.

maki


On 2012/04/12, at 6:10, Paolo Bernardi <bernarpa@gmail.com> wrote:

> I think that setting auto_bootstrap = true or false into cassandra.yaml is enough (if
it isn't there already just add it, for example, after initial_token)
> 
> Paolo
> 
> On Apr 11, 2012 10:34 PM, "Jay Parashar" <jparashar@itscape.com> wrote:
> Thanks a lot Jeremiah.
> Also would you be able to tell me where to  configure the auto_bootstrap
> parameter in version 1.0.8?
> 
> Thanks
> Jay
> 
> -----Original Message-----
> From: Jeremiah Jordan [mailto:JEREMIAH.JORDAN@morningstar.com]
> Sent: Wednesday, April 11, 2012 3:03 PM
> To: user@cassandra.apache.org
> Subject: RE: Initial token - newbie question (version 1.0.8)
> 
> You have to use nodetool move to change the token after the node has started
> the first time.  The value in the config file is only used on first startup.
> 
> Unless you were using RF=3 on your 3 node ring, you can't just start with a
> new token without using nodetool.  You have to do move so that the data gets
> put in the right place.
> 
> How you would do it with out nodetool:
> Dangerous, not smart, can easily shoot yourself in the foot and lose your
> data way, if you were RF = 3:
> If you used RF=3, then all nodes should have all data, and you can stop all
> nodes, remove the system keyspace data, and start up the new cluster with
> the right stuff in the yaml file (blowing away system means this is like
> starting a brand new cluster).  Then re-create all of your keyspaces/column
> families and they will pick up the already existing data.
> 
> Though, if you are rf=3, nodetool move shouldn't be moving anything anyway,
> so you should just do it the right way and use nodetool.
> 
> ________________________________________
> From: Jay Parashar [jparashar@itscape.com]
> Sent: Wednesday, April 11, 2012 1:44 PM
> To: user@cassandra.apache.org
> Subject: Initial token - newbie question (version 1.0.8)
> 
> I created a 3 node ring with the intial_token blank. Of course as expected,
> Cassandra generated its own tokens on startup (e.g. tokens X, Y and Z) The
> nodes or course were not properly balanced, so I did the following steps
> 
>        1)  stopped all the 3 nodes
>        2) assigned initial_tokens (A, B, C) respectively
>        3) Restarted the nodes
> 
> What I find if that the node were still using the original tokens (X, Y and
> Z). Log messages say for node 1 show "Using saved token X"
> 
> I could rebalance suing nodetool and now the nodes are using the correct
> tokens.
> 
> But the question is, why were the new tokens not read from the
> Cassandra.yaml file? Without using nodetool, how do I make it get the token
> from the yaml file? Where is it saved?
> 
> Another question: I could not find the auto_bootstrap in the yaml file as
> per the documentation. Where is this param located?
> Appreciate it.
> Thanks in advance
> Jay
> 
> 

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