auto_bootstrap parameter has been removed and always enabled since 1.0. maki
On 2012/04/12, at 6:10, Paolo Bernardi <berna...@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" <jparas...@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.jor...@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 [jparas...@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 > >
