Thanks! got it!
On Sat, Dec 17, 2016 at 5:02 PM, Max C wrote:
> As Matija mentioned, quorum is RF / 2 + 1:
>
> RF=1, Quorum = 1
> RF=2, Quorum = 2
> RF=3, Quorum = 2
> RF=4, Quorum = 3
> RF=5, Quorum = 3
> RF=6, Quorum = 4
> RF=7, Quorum = 4
>
> So no, you don’t have to have an odd RF to achieve
As Matija mentioned, quorum is RF / 2 + 1:
RF=1, Quorum = 1
RF=2, Quorum = 2
RF=3, Quorum = 2
RF=4, Quorum = 3
RF=5, Quorum = 3
RF=6, Quorum = 4
RF=7, Quorum = 4
So no, you don’t have to have an odd RF to achieve a quorum, as you see above.
Most people use RF=3 with a minimum of 3 nodes, though
@Matjia I think you either did not understand my question or I failed to
explain it more clearly.
On Sat, Dec 17, 2016 at 4:46 PM, Matija Gobec wrote:
> QUORUM is by documentation:
>
> quorum = (sum_of_replication_factors / 2) + 1
>
> Its not fixed value (as 4).
>
> On Sat, Dec 17, 2016 at 10:21
QUORUM is by documentation:
quorum = (sum_of_replication_factors / 2) + 1
Its not fixed value (as 4).
On Sat, Dec 17, 2016 at 10:21 PM, Kant Kodali wrote:
> I keep hearing that the minimum number of Cassandra nodes required to
> achieve Quorum consensus is 4 I wonder why not 3? In fact, many c
See CASSANDRA-11752 for 2.2+ histogram.
2016-12-17 21:13 GMT-02:00 Aleksandr Ivanov :
> Hi C* experts!
>
> I'm trying to understand over what time range C* latency metrics histogram
> is calculated.
> Several sources state that max is calculated from C* start, but on graphs
> I see that max laten
Hi C* experts!
I'm trying to understand over what time range C* latency metrics histogram
is calculated.
Several sources state that max is calculated from C* start, but on graphs I
see that max latency metric is jumping up and down over the time.
Other sources state that histogram is calculated fo
I keep hearing that the minimum number of Cassandra nodes required to
achieve Quorum consensus is 4 I wonder why not 3? In fact, many container
deployments by default seem to deploy 4 nodes. Can anyone shine some light
on this?
What happens if I have 3 nodes and replication factor of 3 and consist
Hi,
Needed a suggestion for a schema query. I want to build a reconciliation
using Cassandra. Basically two or more systems send message to a
reconciliation process. The reconciliation process first does a level one
match of id's and than does complete comparison of messages.
The best I could thin
Thanks again.
I swear I'd look this up instead, but my google-fu is failing me completely
... That said, I presume that they're enabled by setting values for
tombstone_compaction_interval
and tombstone_threshold? Or is there more to it?
On Fri, Dec 16, 2016 at 10:41 PM, Jeff Jirsa
wrote:
> Wit
Hi,
What does 'nodetool netstats' looks like on those nodes?
we have 30GB heap
>
How is the JVM / GC doing? Are you using G1GC or CMS? This setting would be
bad for CMS.
You can use this tool to understand were the CPU is being used
https://github.com/aragozin/jvm-tools/blob/master/sjk-core/COM
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