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Posted to user@cassandra.apache.org by Vivek Mishra <mi...@gmail.com> on 2014/01/02 19:20:11 UTC
Nodetool ring
Hi,
I am trying to understand "Owns" here. AFAIK, it is range(part of
keyspace). Not able to understand why is it shown as 100%? Is it because of
effective ownership?
Address Rack Status State Load Owns Token
-3074457345618258503
x.x.x.x 3 Up Normal 91.28 MB 100.00%
3074457345618258702
x.x.x.x 1 Up Normal 83.45 MB 100.00%
-9223372036854775708
x.x.x.x 2 Up Normal 90.11 MB 100.00%
-3074457345618258503
Any suggestions?
-Vivek
Re: Nodetool ring
Posted by Aaron Morton <aa...@thelastpickle.com>.
Owns is how much of the entire, cluster wide, data set the node has. In both your examples every node has a full copy of the data.
If you have 6 nodes and RF 3 they would have 50%.
Cheers
-----------------
Aaron Morton
New Zealand
@aaronmorton
Co-Founder & Principal Consultant
Apache Cassandra Consulting
http://www.thelastpickle.com
On 3/01/2014, at 6:00 pm, Vivek Mishra <mi...@gmail.com> wrote:
> Yes.
>
>
> On Fri, Jan 3, 2014 at 12:57 AM, Robert Coli <rc...@eventbrite.com> wrote:
> On Thu, Jan 2, 2014 at 10:48 AM, Vivek Mishra <mi...@gmail.com> wrote:
> Thanks for your quick reply. Even with 2 data center with 3 data nodes each i am seeing 100% on both data center nodes.
>
> Do you have RF=3 in both?
>
> =Rob
>
>
Re: Nodetool ring
Posted by Vivek Mishra <mi...@gmail.com>.
Yes.
On Fri, Jan 3, 2014 at 12:57 AM, Robert Coli <rc...@eventbrite.com> wrote:
> On Thu, Jan 2, 2014 at 10:48 AM, Vivek Mishra <mi...@gmail.com>wrote:
>
>> Thanks for your quick reply. Even with 2 data center with 3 data nodes
>> each i am seeing 100% on both data center nodes.
>>
>
> Do you have RF=3 in both?
>
> =Rob
>
>
Re: Nodetool ring
Posted by Robert Coli <rc...@eventbrite.com>.
On Thu, Jan 2, 2014 at 10:48 AM, Vivek Mishra <mi...@gmail.com> wrote:
> Thanks for your quick reply. Even with 2 data center with 3 data nodes
> each i am seeing 100% on both data center nodes.
>
Do you have RF=3 in both?
=Rob
Re: Nodetool ring
Posted by Vivek Mishra <mi...@gmail.com>.
Thanks for your quick reply. Even with 2 data center with 3 data nodes
each i am seeing 100% on both data center nodes.
-Vivek
On Fri, Jan 3, 2014 at 12:07 AM, Robert Coli <rc...@eventbrite.com> wrote:
> On Thu, Jan 2, 2014 at 10:20 AM, Vivek Mishra <mi...@gmail.com>wrote:
>
>> I am trying to understand "Owns" here. AFAIK, it is range(part of
>> keyspace). Not able to understand why is it shown as 100%? Is it because of
>> effective ownership?
>>
>
> When RF=N, effective ownership for each node is 100%.
>
> This is almost certainly what you are seeing, given a 3 node cluster
> (which probably has RF=3...).
>
> =Rob
>
Re: Nodetool ring
Posted by Robert Coli <rc...@eventbrite.com>.
On Thu, Jan 2, 2014 at 10:20 AM, Vivek Mishra <mi...@gmail.com> wrote:
> I am trying to understand "Owns" here. AFAIK, it is range(part of
> keyspace). Not able to understand why is it shown as 100%? Is it because of
> effective ownership?
>
When RF=N, effective ownership for each node is 100%.
This is almost certainly what you are seeing, given a 3 node cluster (which
probably has RF=3...).
=Rob