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From Andrey Ilinykh <ailin...@gmail.com>
Subject Re: Cassandra ring not behaving like a ring
Date Wed, 15 Jan 2014 21:18:30 GMT
what is the RF? What does nodetool ring show?


On Wed, Jan 15, 2014 at 1:03 PM, Narendra Sharma
<narendra.sharma@gmail.com>wrote:

> Sorry for the odd subject but something is wrong with our cassandra ring.
> We have a 9 node ring as below.
>
> N1 - UP/NORMAL
> N2 - UP/NORMAL
> N3 - UP/NORMAL
> N4 - UP/NORMAL
> N5 - UP/NORMAL
> N6 - UP/NORMAL
> N7 - UP/NORMAL
> N8 - UP/NORMAL
> N9 - UP/NORMAL
>
> Using random partitioner and simple snitch. Cassandra 1.1.6 in AWS.
>
> I added a new node with token that is exactly in middle of N6 and N7. So
> the ring displayed as following
> N1 - UP/NORMAL
> N2 - UP/NORMAL
> N3 - UP/NORMAL
> N4 - UP/NORMAL
> N5 - UP/NORMAL
> N6 - UP/NORMAL
> N6.5 - UP/JOINING
> N7 - UP/NORMAL
> N8 - UP/NORMAL
> N9 - UP/NORMAL
>
>
> I noticed that N6.5 is streaming from N1, N2, N6 and N7. I expect it to
> steam from (worst case) N5, N6, N7, N8. What could potentially cause the
> node to get confused about the ring?
>
> --
> Narendra Sharma
> Software Engineer
> *http://www.aeris.com <http://www.aeris.com>*
> *http://narendrasharma.blogspot.com/ <http://narendrasharma.blogspot.com/>*
>
>

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