incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Yuki Morishita <mor.y...@gmail.com>
Subject Re: Why repair -pr doesn't work when RF=0 for 1 DC
Date Thu, 27 Feb 2014 19:06:48 GMT
Yes.

On Thu, Feb 27, 2014 at 12:49 PM, Fabrice Facorat
<fabrice.facorat@gmail.com> wrote:
> So if I understand well from CASSANDRA-5424 and CASSANDRA-5608, as
> stats dc doesn't own data, repair -pr will not repair the data. Only a
> full repair will do it.
>
> Once we will add a RF to stats DC, repair -pr will work again. That's correct ?
>
> 2014-02-27 19:15 GMT+01:00 Yuki Morishita <mor.yuki@gmail.com>:
>> Yes, it is expected behavior since
>> 1.2.5(https://issues.apache.org/jira/browse/CASSANDRA-5424).
>> Since you set foobar not to replicate to stats dc, primary range of
>> foobar keyspace for nodes in stats is empty.
>>
>>
>> On Thu, Feb 27, 2014 at 10:16 AM, Fabrice Facorat
>> <fabrice.facorat@gmail.com> wrote:
>>> Hi,
>>>
>>> we have a cluster with 3 DC, and for one DC ( stats ), RF=0 for a
>>> keyspace using NetworkTopologyStrategy.
>>>
>>> cqlsh> SELECT * FROM system.schema_keyspaces WHERE keyspace_name='foobar';
>>>
>>>  keyspace_name  | durable_writes | strategy_class
>>>                  | strategy_options
>>> ----------------+----------------+------------------------------------------------------+---------------------------------
>>>  foobar |           True |
>>> org.apache.cassandra.locator.NetworkTopologyStrategy |
>>> {"s1":"3","stats":"0","b1":"3"}
>>>
>>>
>>> When doing a "nodetool repair -pr foobar" on a node in DC stats, we
>>> notice that the repair doesn't do anything : it just skips the
>>> keyspace.
>>>
>>> Is this normal behavior ? I guess that some keys belonging to DC
>>> stats's primary range token should have been repaired in the two
>>> others DC ? Am I wrong ?
>>>
>>> We are using cassandra 1.2.13, with 256 vnodes and Murmur3Partitioner
>>>
>>>
>>> --
>>> Close the World, Open the Net
>>> http://www.linux-wizard.net
>>
>>
>>
>> --
>> Yuki Morishita
>>  t:yukim (http://twitter.com/yukim)
>
>
>
> --
> Close the World, Open the Net
> http://www.linux-wizard.net



-- 
Yuki Morishita
 t:yukim (http://twitter.com/yukim)

Mime
View raw message