horizontally scale 4store

[Shaopeng He]

Now  I have successfully setup a cluster for 4store. But if I want to  horizontally scale 4store, How can I do?

Now I have three nodes for a cluster, one master node and two storage nodes.  If my RDF Data is increasing rapidly, I must add another storage node into the cluster, What can I do? Just modify the configure file 4store.conf as following?

                      nodes=storage1;storage2       update  as   nodes=storage1;storage2;storage3

Anyone can help me ,  thanks.

[Steve Harris]

I replied to an offlist request, but for the benefit of anyone else wondering the same thing:

You have to create a new KB across the new node set, and migrate the data from one to the other. There's no way to do it without downtime.

Also, note that we don't recommend running with a number of nodes that doesn't divide into the number of segments (which has to be a power of two) you can do it, but might not see any performance increase.

- Steve

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Steve Harris

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