we faced a similar issue earlier, but that was more related to firewall
rules. The newly added datacenter was not able to communicate with the
existing datacenters on the port 7000(inter-node communication). Your's
might be a different issue, but just saying.


On Thu, Oct 20, 2016 at 4:12 PM, Jai Bheemsen Rao Dhanwada <
jaibheem...@gmail.com> wrote:

> Hello All,
>
> I have single datacenter with 3 C* nodes and we are trying to expand the
> cluster to another region/DC. I am seeing the below error while doing a 
> "nodetool
> rebuild -- name_of_existing_data_center" .
>
> [user@machine ~]$ nodetool rebuild DC1
> nodetool: Unable to find sufficient sources for streaming range
> (-402178150752044282,-396707578307430827] in keyspace system_distributed
> See 'nodetool help' or 'nodetool help <command>'.
> [user@machine ~]$
>
> user@cqlsh> SELECT * from system_schema.keyspaces where
> keyspace_name='system_distributed';
>
>  keyspace_name | durable_writes | replication
> ---------------+----------------+---------------------------
> ----------------------------------------------------------
>  system_distributed |           True | {'class':
> 'org.apache.cassandra.locator.SimpleStrategy', 'replication_factor': '3'}
>
> (1 rows)
>
> To overcome this I have updated system_distributed keyspace to DC1:3 and
> DC2:3 with NetworkTopologyStrategy
>
> C* Version - 3.0.8
>
> Is this a bug that is introduced in 3.0.8 version of cassandra? as I
> haven't seen this issue with the older versions?
>

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