There is much more to it than just changing the RF in the keyspace!
See here:
https://docs.datastax.com/en/cassandra/3.0/cassandra/operations/opsAddDCToCluster.html
2017-01-24 16:18 GMT+01:00 Abhishek Kumar Maheshwari <
abhishek.maheshw...@timesinternet.in>:
> Hi All,
>
>
>
> I have Cassandra stack with 2 Dc
>
>
>
> Datacenter: DRPOCcluster
>
> ========================
>
> Status=Up/Down
>
> |/ State=Normal/Leaving/Joining/Moving
>
> -- Address Load Tokens Owns Host
> ID Rack
>
> UN 172.29.xx.xxx 256 MB 256 ?
> b6b8cbb9-1fed-471f-aea9-6a657e7ac80a
> 01
>
> UN 172.29.xx.xxx 240 MB 256 ?
> 604abbf5-8639-4104-8f60-fd6573fb2e17
> 03
>
> UN 172.29. xx.xxx 240 MB 256 ?
> 32fa79ee-93c6-4e5b-a910-f27a1e9d66c1
> 02
>
> Datacenter: dc_india
>
> ====================
>
> Status=Up/Down
>
> |/ State=Normal/Leaving/Joining/Moving
>
> -- Address Load Tokens Owns Host
> ID Rack
>
> DN 172.26. .xx.xxx 78.97 GB 256 ?
> 3e8133ed-98b5-418d-96b5-690a1450cd30 RACK1
>
> DN 172.26. .xx.xxx 79.18 GB 256 ?
> 7d3f5b25-88f9-4be7-b0f5-746619153543 RACK2
>
>
>
> dc_india is old Dc which contains all data.
>
> I update keyspace as per below:
>
>
>
> alter KEYSPACE wls WITH replication = {'class': 'NetworkTopologyStrategy',
> 'DRPOCcluster': '2','dc_india':'2'} AND durable_writes = true;
>
>
>
> but old data is not updating in DRPOCcluster(which is new). Also, while
> running nodetool rebuild getting below exception:
>
> Cammand: ./nodetool rebuild -dc dc_india
>
>
>
> Exception : nodetool: Unable to find sufficient sources for streaming
> range (-8756974555527424852,-8755484427030035332] in keyspace
> system_distributed
>
>
>
> Cassandra version : 3.0.9
>
>
>
>
>
> *Thanks & Regards,*
> *Abhishek Kumar Maheshwari*
> *+91- 9999805591 <+91%2099998%2005591> (Mobile)*
>
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