What's your definition of "sync"? Streaming all the existing data to the
new DC? or the time lag between a write request is completed in one DC
and the other DC?
The former can be estimated based on a few facts about your setup
(number of nodes, data size, etc.) and some measured data
Hi,
Is there a way to measure cassandra nodes data sync time between DC1 and
DC2? Currently DC1 is the prod datacenter. I am adding DC2 to the new data
center by referring to
https://docs.apigee.com/private-cloud/v4.51.00/adding-data-center?hl=en.
Even when a node has been stopped, it will still show up in the
"nodetool status" output from other running nodes. While a node is
starting, the status output from this node itself is pointless, because
it may yet to receive the status from other nodes. You should ignore
that until it's fully
I restarted 48 nodes and every one came up fine. I was just wondering why the
status run on the restarted node has no ID until it has finished dealing with
whatever it does when starting up but it shows up immediately when status is
run on any other node.
I guess it prompts the question: how
Did the node finish starting when you checked the "nodetool status"
output? Try "nodetool netstats" on the starting node, the output will
show "Mode: NORMAL" if it has finished starting. It's also worth
checking the "nodetool info" output, and make sure "Gossip active" and
"Native Transport
Hi all,
Restarting the service on a node. Checking status from a remote node, I see:
(prod) marc.hoppins.ipa@ba-cassandra01:~ $ /opt/cassandra/bin/nodetool status
-r|grep 03
UN ba-cassandra09 779.03 GiB 16 ?
1fc8061d-2dd4-4b2c-97fa-e492063da495 SSW09
UN ba-cassandra20 796.94
