gistfile1.txt

16:18 <rando> is `riak-admin join` idempotent? 

16:20 <rando> im working on provisioning scripts, and it will automatically run 
`riak-admin join` to join my cluster. I just want to see if its ok to run it 
multiple times (every time I provision), or if I need a guard to keep it from 
running after the first time 

16:29 <jtuple> rando: Joining is more or less idempotent. 

16:34 <rando> jtuple: "more or less"? 

16:35 <rando> so is it possible to run it too often? 

16:35 <rando> what happens if it runs while the node is still joining? 

16:39 <jtuple> rando: You can treat it as idempotent. A join is simply implemented as 
'joining node sends ring to cluster'. After that, the ring gossips and eventually 
converges to a new state with the joining node as part of it. 

16:40 <rando> jtuple: ok, cool 

16:40 <rando> thanks 

16:40 <jtuple> rando: However, keep in mind that we recommend you 
have 'riak-admin ringready' in between having multiple nodes join the cluster. 

16:41 <jtuple> rando: Shouldn't be necessary betweenb multiple sends of the same node 
join command, just don't have multiple outstanding nodes trying to join at once.