Hello everybody,
I am using a 3-node Cassandra cluster with Cassandra 3.0.10.
I recently added a new node (to make it a 3-node cluster).
I am using a replication factor of 3 , so I expected to have a copy of
the same data on each node :
CREATE KEYSPACE mydata WITH replication = {'class': 'SimpleStrategy',
'replication_factor': '3'} AND durable_writes = true;
But the new node has less data that the other 2 :
Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host
ID Rack
UN XXX.XXX.XXX.XXX 53.28 GB 256 100.0% xxxxxx rack1
UN XXX.XXX.XXX.XXX 64.7 GB 256 100.0% xxxxxx rack1
UN XXX.XXX.XXX.XXX 1.28 GB 256 100.0% xxxxxx rack1
On the new node :
/XXXXXX/data-6d674a40efab11e5b67e6d75503d5d02/:
total 1.2G
on one of the old nodes :
/XXXXXX/data-6d674a40efab11e5b67e6d75503d5d02/:
total 52G
I am monitoring the amount of data on each node, and they grow at the
same rate. So I suspect that my new data are replicated on the 3 nodes
but the old data stored on the first 2 nodes are not replicated on the
new node.
I ran nodetool repair (on each node, one at a time), but the new node
still does not have a copy of the old data.
Could you please help me understand why the old data is not replicated
to the new node ? Please let me know if you need further information.
Thank you,
Cheers,
Bertrand
