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From daemeon reiydelle <daeme...@gmail.com>
Subject Re: electricity outage problem
Date Tue, 12 Jan 2016 15:02:06 GMT
This happens when there is insufficient time for nodes coming up to join a
network. It takes a few seconds for a node to come up, e.g. your seed node.
If you tell a node to join a cluster you can get this scenario because of
high network utilization as well. I wait 90 seconds after the first (i.e.
my first seed) node comes up to start the next one. Any nodes that are
seeds need some 60 seconds, so the additional 30 seconds is a buffer.
Additional nodes each wait 60 seconds before joining (although this is a
parallel tree for large clusters).





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On Tue, Jan 12, 2016 at 6:56 AM, Adil <adil.chabaq@gmail.com> wrote:

> Hi,
>
> we have two DC with 5 nodes in each cluster, yesterday there was an
> electricity outage causing all nodes down, we restart the clusters but when
> we run nodetool status on DC1 it results that some nodes are DN, the
> strange thing is that running the command from diffrent node in DC1 doesn't
> give the same node in DC as own, we have noticed this message in the log
> "received an invalid gossip generation for peer", does anyone know how to
> resolve this problem? should we purge the gossip?
>
> thanks
>
> Adil
>

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