cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Anishek Agarwal <anis...@gmail.com>
Subject Re: nodetool repair with -pr and -dc
Date Thu, 11 Aug 2016 04:29:17 GMT
ok thanks, so if we want to use -pr option ( which i suppose we should to
prevent duplicate checks) in 2.0 then if we run the repair on all nodes in
a single DC then it should be sufficient and we should not need to run it
on all nodes across DC's ?



On Wed, Aug 10, 2016 at 5:01 PM, Paulo Motta <pauloricardomg@gmail.com>
wrote:

> On 2.0 repair -pr option is not supported together with -local, -hosts or
> -dc, since it assumes you need to repair all nodes in all DCs and it will
> throw and error if you try to run with nodetool, so perhaps there's
> something wrong with range_repair options parsing.
>
> On 2.1 it was added support to simultaneous -pr and -local options on
> CASSANDRA-7450, so if you need that you can either upgade to 2.1 or
> backport that to 2.0.
>
>
> 2016-08-10 5:20 GMT-03:00 Anishek Agarwal <anishek@gmail.com>:
>
>> Hello,
>>
>> We have 2.0.17 cassandra cluster(*DC1*) with a cross dc setup with a
>> smaller cluster(*DC2*).  After reading various blogs about
>> scheduling/running repairs looks like its good to run it with the following
>>
>>
>> -pr for primary range only
>> -st -et for sub ranges
>> -par for parallel
>> -dc to make sure we can schedule repairs independently on each Data
>> centre we have.
>>
>> i have configured the above using the repair utility @
>> https://github.com/BrianGallew/cassandra_range_repair.git
>>
>> which leads to the following command :
>>
>> ./src/range_repair.py -k [keyspace] -c [columnfamily name] -v -H
>> localhost -p -D* DC1*
>>
>> but looks like the merkle tree is being calculated on nodes which are
>> part of other *DC2.*
>>
>> why does this happen? i thought it should only look at the nodes in local
>> cluster. however on nodetool the* -pr* option cannot be used with
>> *-local* according to docs @https://docs.datastax.com/en/
>> cassandra/2.0/cassandra/tools/toolsRepair.html
>>
>> so i am may be missing something, can someone help explain this please.
>>
>> thanks
>> anishek
>>
>
>

Mime
View raw message