Awesome, thank you so much! I completely missed the part "the token range
that it hits will be split", now everything makes sense!
Again, thanks a lot for your help!
Luca
On Wed, Jun 15, 2022 at 1:04 AM Hannu Kröger wrote:
> Adding a token (which in essence is a vnode) means that the token ra
Adding a token (which in essence is a vnode) means that the token range that it
hits will be split into two. And that data range which has a new owner will be
replicated to the new owner node. If there are a lot of tokens (=vnodes) in the
cluster, adding some amount of vnodes (e.g. num_tokens=16
Thanks a lot Hannu,
really helpful! But isn't that crazy expensive? adding a vnode means that
every vnode in the cluster will have a different range of tokens which
means a lot of data will need to be moved around.
Thanks again,
Luca
On Wed, Jun 15, 2022 at 12:25 AM Hannu Kröger wrote:
> Whe
When a node joins a cluster, it gets (semi-)random tokens based on num_tokens
value.
Total amount of vnodes is not fixed. I don’t remember top of my hat if
num_tokens can be different on each node but whenever you add a node, new
vnodes get “created”. Existing token ranges will be split and som
ok, that makes sense, but does the partitioner add vnodes? is the number of
vnodes fixed in a cluster?
On Wed, Jun 15, 2022 at 12:10 AM Hannu Kröger wrote:
> Hey,
>
> num_tokens is tokens per node.
>
> So in your case you would have 15 vnodes altogether.
>
> Cheers,
> Hannu
>
> > On 15. Jun 2022
Hey,
num_tokens is tokens per node.
So in your case you would have 15 vnodes altogether.
Cheers,
Hannu
> On 15. Jun 2022, at 10.08, Luca Rondanini wrote:
>
> Hi all,
>
> I'm just trying to understand better how cassandra works.
>
> My understanding is that, once set, the number of vnodes d
