cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Eric Stevens <migh...@gmail.com>
Subject Re: LOCAL_SERIAL
Date Thu, 15 Oct 2015 15:29:48 GMT
You probably could, but if I were you, I'd consider a tool built for that
purpose, such as Zookeeper.  It'd open up access to a lot of other great
cluster coordination features.

On Thu, Oct 15, 2015 at 8:47 AM Jan Algermissen <algermissen1971@icloud.com>
wrote:

> Hi,
>
> suppose I have two data centers and want to coordinate a bunch of services
> in each data center (for example to load data into a per-DC system that is
> not DC-aware (Solr)).
>
> Does it make sense to use CAS functionality with explicit LOCAL_SERIAL to
> 'elect' a leader per data center to do the work?
>
> So instead of saying 'for this query, LOCAL_SERIAL is enough for me' this
> would be like saying 'I want XYZ to happen exactly once, per data center'.
> - All services would try to do XYZ, but only one instance *per datacenter*
> will actually become the leader and succeed.
>
> Makes sense?
>
> Jan
>

Mime
View raw message