When setting up a new (additional) data center, the documentation tells us
to use "nodetool rebuild -- <old dc>" to fill up the node(s) in the new dc,
and to disable auto_bootstrap.

I'm wondering if it is possible to fill the node with "auto_bootstrap=true"
instead of a nodetool rebuild command. If so, how will Cassandra decide
from where to stream the data?

The reason I'm asking is that when using rebuild, I've learned from
experience that the node immediately joins the cluster, and starts
accepting reads (from other DCs) for the range it owns. But since the data
is not complete yet, it can't return anything. This seems to be a dangerous
side effect of this procedure, and therefore can't be used.

Thanks
Tom

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