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From Narendra Sharma <narendra.sha...@gmail.com>
Subject Re: Cassandra ring not behaving like a ring
Date Thu, 16 Jan 2014 20:45:51 GMT
Any pointers? I am planning to do rolling restart of the cluster nodes to
see if it will help.
On Jan 15, 2014 2:59 PM, "Narendra Sharma" <narendra.sharma@gmail.com>
wrote:

> RF=3.
> On Jan 15, 2014 1:18 PM, "Andrey Ilinykh" <ailinykh@gmail.com> wrote:
>
>> 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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