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Date: Tue, 27 Nov 2012 19:28:50 -0500 (EST)
From: "jeremy@simpleartmarketing.com" <jeremy@simpleartmarketing.com>
Reply-To: "jeremy@simpleartmarketing.com" <jeremy@simpleartmarketing.com>
To: user@cassandra.apache.org
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 <CAENxBwxPgND2P2XskUR_=vWf64i6+zS4w8fisTvC3VLg1VB9Aw@mail.gmail.com>
Subject: Re: selective replication of keyspaces
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Thank you.  This is a good  start I was beginning to think it couldn't be done.

When I run the command I get the error

syntax error at position 21: missing EOF at 'placement_strategy'

that is probably because I still need to set the correct properties in the conf
files


On November 27, 2012 at 5:41 PM Edward Capriolo <edlinuxguru@gmail.com> wrote:

>  You can do something like this:
> 
>  Divide your nodes up into 4 datacenters art1,art2,art3,core
> 
>  [default@unknown] create keyspace art1 placement_strategy =
> 'org.apache.cassandra.locator.NetworkTopologyStrategy' and
> strategy_options=[{art1:2,core:2}];
> 
>  [default@unknown] create keyspace art2 placement_strategy =
> 'org.apache.cassandra.locator.NetworkTopologyStrategy' and
> strategy_options=[{art2:2,core:2}];
> 
>  [default@unknown] create keyspace art3 placement_strategy =
> 'org.apache.cassandra.locator.NetworkTopologyStrategy' and
> strategy_options=[{art3:2,core:2}];
> 
>  [default@unknown] create keyspace core placement_strategy =
> 'org.apache.cassandra.locator.NetworkTopologyStrategy' and
> strategy_options=[{core:2}];
> 
> 
> 
>  On Tue, Nov 27, 2012 at 5:02 PM, Artist <jeremy@simpleartmarketing.com
> <mailto:jeremy@simpleartmarketing.com> > wrote:
>    > >    I have 3 art-servers each has a cassandra cluster.
> >    Each of the art-servers has config/state information stored in a
> > Keyspaces
> >    respectively called
> >    art-server-1-current-state, art-server-2-current-state,
> >    art-server-3-current-state
> > 
> >    in my core server I have a separate Cassandra cluster.  I would like to
> > use
> >    Cassandra to replicate the current-state of each art-server on the core
> >    cassandra server without sharing that information with any of the
> >    art-servers.
> > 
> >    Is there is a way to replicate the keyspaces to a single Cassandra
> > cluster
> >    my core without having any peer sharing between the 3 art-servers.
> > 
> >    -
> >    Artist
> > 
> > 
> > 
> >    --
> >    View this message in context:
> > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/selective-replication-of-keyspaces-tp7584007.html
> > <http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/selective-replication-of-keyspaces-tp7584007.html>
> >    Sent from the cassandra-user@incubator.apache.org
> > <mailto:cassandra-user@incubator.apache.org> mailing list archive at
> > Nabble.com.
> >  > 

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  <div>
   Thank you. &#160;This is a good &#160;start I was beginning to think it couldn&#39;t be done.
  </div> 
  <div>
   &#160;
  </div> 
  <div>
   When I run the command I get the error&#160;
  </div> 
  <div>
   &#160;
  </div> 
  <div>
   syntax error at position 21: missing EOF at &#39;placement_strategy&#39;
  </div> 
  <div>
   &#160;
  </div> 
  <div>
   that is probably because I still need to set the correct properties in the conf files
  </div> 
  <div>
   &#160;
  </div> 
  <div>
   &#160;
  </div> 
  <div>
   <br/>On November 27, 2012 at 5:41 PM Edward Capriolo &#60;edlinuxguru@gmail.com&#62; wrote:
  </div> 
  <div style="position: relative;"> 
   <blockquote style="margin-left: 0px; padding-left: 10px; border-left: solid 1px blue;" type="cite"> 
    <div>
     You can do something like this:
    </div> 
    <div>
     &#160;
    </div> 
    <div>
     Divide your nodes up into 4 datacenters art1,art2,art3,core
    </div> 
    <div>
     &#160;
    </div> 
    <div>
     [default@unknown] create keyspace art1 placement_strategy = &#39;org.apache.cassandra.locator.NetworkTopologyStrategy&#39; and strategy_options=[{art1:2,core:2}];
    </div> 
    <div>
     &#160;
    </div> 
    <div>
     [default@unknown] create keyspace art2 placement_strategy = &#39;org.apache.cassandra.locator.NetworkTopologyStrategy&#39; and strategy_options=[{art2:2,core:2}];
    </div> 
    <div>
     &#160;
    </div> 
    <div>
     [default@unknown] create keyspace art3 placement_strategy = &#39;org.apache.cassandra.locator.NetworkTopologyStrategy&#39; and strategy_options=[{art3:2,core:2}];
    </div> 
    <div>
     &#160;
    </div> 
    <div> 
     <div>
      [default@unknown] create keyspace core placement_strategy = &#39;org.apache.cassandra.locator.NetworkTopologyStrategy&#39; and strategy_options=[{core:2}];
     </div> 
    </div> 
    <div>
     &#160;
    </div> 
    <div>
     &#160;
    </div> 
    <br/> 
    <div class="gmail_quote">
     On Tue, Nov 27, 2012 at 5:02 PM, Artist 
     <span>&#60;<a target="_blank" href="mailto:jeremy@simpleartmarketing.com">jeremy@simpleartmarketing.com</a>&#62;</span> wrote:
     <br/> 
     <blockquote style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;">
      <br/> I have 3 art-servers each has a cassandra cluster.
      <br/> Each of the art-servers has config/state information stored in a Keyspaces
      <br/> respectively called
      <br/> art-server-1-current-state, art-server-2-current-state,
      <br/> art-server-3-current-state
      <br/> 
      <br/> in my core server I have a separate Cassandra cluster. &#160;I would like to use
      <br/> Cassandra to replicate the current-state of each art-server on the core
      <br/> cassandra server without sharing that information with any of the
      <br/> art-servers.
      <br/> 
      <br/> Is there is a way to replicate the keyspaces to a single Cassandra cluster
      <br/> my core without having any peer sharing between the 3 art-servers.
      <br/> 
      <br/> -
      <br/> Artist
      <br/> 
      <br/> 
      <br/> 
      <br/> --
      <br/> View this message in context: 
      <a target="_blank" href="http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/selective-replication-of-keyspaces-tp7584007.html">http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/selective-replication-of-keyspaces-tp7584007.html</a>
      <br/> Sent from the 
      <a href="mailto:cassandra-user@incubator.apache.org">cassandra-user@incubator.apache.org</a> mailing list archive at Nabble.com.
     </blockquote> 
    </div> 
   </blockquote> 
   <br/>&#160;
  </div>
 
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