Re: [controller-dev] many logs about log index out-of-sync

Robert Varga

On 09/01/2019 01:41, Tom Pantelis wrote:
> Those messages can happen if a follower gets behind the leader,
especially if it gets isolated and AppendEntries
> messages from the leader get backed up and then the follower gets
a bunch of messages quickly when it reconnects to the
> leader. Looks like it eventually caught up to the leader although,
from the output, the distro you're testing with is
> missing which
should speed up the sync process in that case and alleviate
> most of those messages.

Thanks Tom, makes sense then as this is on one controller that came
up last after
bouncing them all.

yeah it eventually synced but it went down an inefficient path that
resulted in 1176 messages from the leader to sync it. Actually that
patch I mentioned above was for a different case and wouldn't help in
this case. I have an idea where we can optimize it to eliminate those
extra messages and make it faster. should help with that (sorry,
it got lost for a year).


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