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From Pranay Agarwal <agarwalpran...@gmail.com>
Subject Re: Adding new node to Cassandra cluster is too slow
Date Fri, 20 Mar 2015 01:16:48 GMT
Also, the new nodes (3 of them, in *UJ state*) are showing some data size
(~10g). Is there any data loss chances with stopping the cassandra on them?

On Thu, Mar 19, 2015 at 6:02 PM, Pranay Agarwal <agarwalpranaya@gmail.com>
wrote:

> Thanks Rob, You are right. I am using ReleaseVersion: 2.1.0
>
> What do you mean by point 3? Also, by doing one at a time, does it mean
> wait till nodetool status of the new node is UN from UJ?
>
> On Thu, Mar 19, 2015 at 5:44 PM, Robert Coli <rcoli@eventbrite.com> wrote:
>
>> On Thu, Mar 19, 2015 at 5:32 PM, Pranay Agarwal <agarwalpranaya@gmail.com
>> > wrote:
>>
>>> I have 14 nodes cassandra cluster, each node as around 50gb of data. I
>>> added 3 new nodes to the cluster and I can see the status as *UJ *for
>>> the new nodes. They have been in that for almost a day now and their data
>>> size seems to be same as well. There is almost no CPU or disk usage either
>>> on them.
>>>
>>
>> It is not supported to add multiple nodes to a cluster simultaneously
>> until 2.1.1 [1]. Usually what happens is one or more of the bootstraps
>> fails and hangs forever. This seems to be what has happened to you.
>>
>> To resolve :
>>
>> 1) stop each of the bootstrapping nodes
>> 2) wipe their data directories completey
>> 3) verify that they do not show up in gossip on the other nodes
>> 4) bootstrap them again, one at a time
>>
>> =Rob
>> [1] https://issues.apache.org/jira/browse/CASSANDRA-7069
>>
>>
>>
>

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