es would be changed, not all 25600 when a
> new node is joining.
>
> So you see that for each node it’s only 30mb to replicate to the new node.
> Not very expensive, right?
>
> In real life, it’s not so precise and all but the basic idea is the same.
>
> Cheers,
> Hannu
>
e load on the cluster, it should be somewhat
> evenly distributed among other nodes. If you have just a single token per
> node then scaling up or down has a bit different effects due to balancing
> issues etc. So there is a reason why default num_tokens is 16 currently.
>
> 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 does not change
> in a cluste
Hi all,
I'm just trying to understand better how cassandra works.
My understanding is that, once set, the number of vnodes does not change in
a cluster. The partitioner allocates vnodes to nodes ensuring replication
data are not stored on the same node.
But what happens if there are more nodes t
to engineer around the 900+
> tables, no matter which GC you use.
>
>
>
> Sean Durity – Staff Systems Engineer, Cassandra
>
>
>
> *From:* Luca Rondanini
> *Sent:* Monday, July 19, 2021 11:34 AM
> *To:* user@cassandra.apache.org
> *Subject:* [EXTERNAL] R/W timeo
Thanks Yakir,
I can already experience slow repairs and startups but I'd like to
stabilize the system before jumping into refactoring (columns are not a
problem, max 10/cols per table). Do you believe it's a GC problem to cause
the timeouts and crashes? I'll give it a try and update this post.
Th
Hi all,
I have a keyspace with almost 900 tables.
Lately I started receiving lots of w/r timeouts (eg
com.datastax.driver.core.exceptions.Read/WriteTimeoutException: Cassandra
timeout during write query at consistency LOCAL_ONE (1 replica were
required but only 0 acknowledged the write).
*I'm ev
Hi all,
Out of the blue, I started receiving a strange error message when inserting
a new row that seems related to guava (see below). I really don't
understand what is going on. I didn't change anything on the server and
everything works fine if the query is an update (the row already exists)
Di