offline compaction

[Feng Qu <ma...@gmail.com>]

Hello, is there a way to take one node out of ring and running a major compaction? 
 
Feng Qu

Re: offline compaction

[Mike Panchenko <m...@mihasya.com>]

Yes, that is what would happen; some anti entropy mechanism would have to
perform the replication after the fact (hinted handoff, read repair, manual
repair etc).

For most things, it's better to rely on the dynamic endpoint snitch and
some sort of dynamic load balancing from the client (see:
https://github.com/rantav/hector/blob/master/core/src/main/java/me/prettyprint/cassandra/connection/DynamicLoadBalancingPolicy.java)
to automatically route around busy nodes.

I don't remember when the referenced nodetool command was added; for older
versions, a similar effect can be achieved using iptables or similar tools.

On Thu, Mar 8, 2012 at 12:56 PM, Karl Hiramoto <ka...@hiramoto.org> wrote:

> On 03/08/12 21:40, Edward Capriolo wrote:
>
>> On Thu, Mar 8, 2012 at 1:43 PM, Feng Qu<ma...@gmail.com>  wrote:
>>
>>> Hello, is there a way to take one node out of ring and running a major
>>> compaction?
>>>
>>> Feng Qu
>>>
>> http://www.jointhegrid.com/**highperfcassandra/?p=187<http://www.jointhegrid.com/highperfcassandra/?p=187>
>>
>>
> What are the drawbacks to disable thrift and gossip?  So you take a node
> offine to do repair/compact, but then assuming writes are comming into your
> cluseter at a steady rate, you have missing writes that need to be repaired
> in the node that was offline? Is that what would happen?
>
> --
> Karl
>

Re: offline compaction

[Karl Hiramoto <ka...@hiramoto.org>]

On 03/08/12 21:40, Edward Capriolo wrote:
> On Thu, Mar 8, 2012 at 1:43 PM, Feng Qu<ma...@gmail.com>  wrote:
>> Hello, is there a way to take one node out of ring and running a major
>> compaction?
>>
>> Feng Qu
> http://www.jointhegrid.com/highperfcassandra/?p=187
>

What are the drawbacks to disable thrift and gossip?  So you take a node 
offine to do repair/compact, but then assuming writes are comming into 
your cluseter at a steady rate, you have missing writes that need to be 
repaired in the node that was offline? Is that what would happen?

--
Karl

Re: offline compaction

[Edward Capriolo <ed...@gmail.com>]

On Thu, Mar 8, 2012 at 1:43 PM, Feng Qu <ma...@gmail.com> wrote:
> Hello, is there a way to take one node out of ring and running a major
> compaction?
>
> Feng Qu

http://www.jointhegrid.com/highperfcassandra/?p=187

Cheers