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Sylvain Lebresne commented on CASSANDRA-7510:
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bq. My proposal would be to send an additional UP event when the bootstrap is
done
Frankly, I never intended the onAdd notification to be sent before the
bootstrap, it's more a bug that never got fixed. Imo, it doesn't make a whole
lot of sense to notify client at all until a node has been properly
boostrapped, so I would *strongly* prefer just fixing onAdd notifications so
it's send only when the node is ready. Similarly, onUp is actually sent before
the the native protocol server has been initialized because there is currently
no proper place to do it. So really, what we should fix is that onAdd/onUp
events for a given node should only be sent when the node in question is ready
to receive connection on the native protocol server. This might require adding
an additional gossip state/message so a node advertise when the protocol server
is up and ready.
> Notify clients that bootstrap is finished over binary protocol
> --------------------------------------------------------------
>
> Key: CASSANDRA-7510
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7510
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Joost Reuzel
>
> Currently, Cassandra will notify clients when a new node is added to a
> cluster. However, that node is typically not usable yet. It first needs to
> gossip its key range and finish loading all its assigned data before it
> allows clients to connect. Depending on the amount of data this may take
> quite a while. The clients in the mean time have no clue about the bootstrap
> status of that node. The only thing they can do is periodically check if it
> will accept a connection.
> My proposal would be to send an additional UP event when the bootstrap is
> done, this allows clients to mark the node initially as down/unavailable and
> simply wait for the UP event to arrive.
> Kind regards,
> Joost
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