On Wed, May 31, 2017 at 9:55 AM, Junaid Nasir <jna...@an10.io> wrote:
> Cassandra ensure that adding or removing nodes are very easy and that load > is balanced between nodes when a change is made. but it's not working in my > case. > I have a single node C* deployment (with 270 GB of data) and want to load > balance the data on multiple nodes, > I guess it's fair to assume this is not a production "cluster"? > I followed this guide > <https://docs.datastax.com/en/cassandra/2.1/cassandra/operations/ops_add_node_to_cluster_t.html> > > `nodetool status` shows 2 nodes but load is not balanced between them > > Datacenter: dc1 > =============== > Status=Up/Down > |/ State=Normal/Leaving/Joining/Moving > -- Address Load Tokens Owns (effective) Host ID Rack > UN 10.128.0.7 270.75 GiB 256 48.6% > 1a3f6faa-4376-45a8-9c20-11480ae5664c rack1 > UN 10.128.0.14 414.36 KiB 256 51.4% > 66a89fbf-08ba-4b5d-9f10-55d52a199b41 rack1 > > I can imagine you are referring to Load column here, which shows only 400 KB for the new node. Did the newly added node actually bootstrap? Are there any error/warning messages in the Cassandra log? > I also ran 'nodetool repair' on new node but result is same. any pointers > would be appreciated :) > Hm, this is not expected. Even if the node didn't bootstrap, repair should have streamed the data it is responsible for. conf file of new node > > cluster_name: 'cluster1' > - seeds: "10.128.0.7" > num_tokens: 256 > endpoint_snitch: GossipingPropertyFileSnitch > > I see that you've tried to add the new node as a normal (non-seed) node, which supposed to work and it should have bootstrapped itself. Which version of Cassandra is it exactly? -- Oleksandr "Alex" Shulgin | Database Engineer | Zalando SE | Tel: +49 176 127-59-707
