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Posted to user@cassandra.apache.org by simojenki <si...@gmail.com> on 2012/04/19 17:18:46 UTC
migrating from SimpleStrategy to NetworkTopologyStrategy
Hi,
Is there any documentation on what the procedure for migrating from
SimpleStrategy to NetworkTopologyStrategy?
thanks
Simon
Re: migrating from SimpleStrategy to NetworkTopologyStrategy
Posted by Ravikumar Govindarajan <ra...@gmail.com>.
We tried this route previously. We did not run repair at all {our use-cases
don't need a repair} but while adding a secondary data center, we were
forced to run repair. It ended up exploding the data.
We finally had to start afresh, scrapped the cluster and re-import the data
with NTS. Now, whether we require repair or not, we are running it
regularly!!!
I feel that it should be alright to migrate to NTS, if you run repairs
regularly and keep the cluster healthy.
Regards,
Ravi
On Fri, Apr 20, 2012 at 2:20 AM, aaron morton <aa...@thelastpickle.com>wrote:
> There is this, it's old..
> http://wiki.apache.org/cassandra/Operations#Replication
> There was also a discussion about it in the last month or so.
>
> i *think* it's ok so long as you move to a single DC and single rack. But
> please test.
>
> Cheers
>
>
> -----------------
> Aaron Morton
> Freelance Developer
> @aaronmorton
> http://www.thelastpickle.com
>
> On 20/04/2012, at 5:03 AM, Marcus Both wrote:
>
> I think that is enough to do an update on keyspace, for example
> (cassandra-cli):
> update keyspace KEYSPACE with placement_strategy =
> 'org.apache.cassandra.locator.NetworkTopologyStrategy' and strategy_options
> = {datacenter1: 1};
>
> On Thu, 19 Apr 2012 16:18:46 +0100
> simojenki <si...@gmail.com> wrote:
>
> Hi,
>
>
> Is there any documentation on what the procedure for migrating from
>
> SimpleStrategy to NetworkTopologyStrategy?
>
>
> thanks
>
>
> Simon
>
>
>
>
> --
> Marcus Both
>
>
>
Re: migrating from SimpleStrategy to NetworkTopologyStrategy
Posted by aaron morton <aa...@thelastpickle.com>.
There is this, it's old.. http://wiki.apache.org/cassandra/Operations#Replication
There was also a discussion about it in the last month or so.
i *think* it's ok so long as you move to a single DC and single rack. But please test.
Cheers
-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 20/04/2012, at 5:03 AM, Marcus Both wrote:
> I think that is enough to do an update on keyspace, for example (cassandra-cli):
> update keyspace KEYSPACE with placement_strategy = 'org.apache.cassandra.locator.NetworkTopologyStrategy' and strategy_options = {datacenter1: 1};
>
> On Thu, 19 Apr 2012 16:18:46 +0100
> simojenki <si...@gmail.com> wrote:
>
>> Hi,
>>
>> Is there any documentation on what the procedure for migrating from
>> SimpleStrategy to NetworkTopologyStrategy?
>>
>> thanks
>>
>> Simon
>>
>>
>
> --
> Marcus Both
>
Re: migrating from SimpleStrategy to NetworkTopologyStrategy
Posted by Marcus Both <mb...@terra.com.br>.
I think that is enough to do an update on keyspace, for example (cassandra-cli):
update keyspace KEYSPACE with placement_strategy = 'org.apache.cassandra.locator.NetworkTopologyStrategy' and strategy_options = {datacenter1: 1};
On Thu, 19 Apr 2012 16:18:46 +0100
simojenki <si...@gmail.com> wrote:
> Hi,
>
> Is there any documentation on what the procedure for migrating from
> SimpleStrategy to NetworkTopologyStrategy?
>
> thanks
>
> Simon
>
>
--
Marcus Both