-Re: leader election length
Camille Fournier 2011-12-12, 17:35
Existing sessions will not expire from the server side during election.
Your client code may choose to close them on its end if you sit in a
DISCONNECTED state for too long, but nothing should be expiring the
sessions while quorum is not available.
On Mon, Dec 12, 2011 at 12:06 PM, Botond Hejj <[EMAIL PROTECTED]
> Hi ZooKeeper users,
> I am playing currently with zookeeper and testing what happens if the
> leader of an ensemble goes down.
> I know that during the leader election zookeeper server won't reply to
> any requests and if leader election takes a long time than existing
> sessions might expire.
> What I see in my tests that each server reads the last snapshot file
> to get last zxid for leader election and when the leader is elected
> than the leader reads the snapshot again before it syncs the
> This means that the more data we store in zookeeper the longer it
> takes to elect a new leader. This is also means as load of the
> ensemble increases clients need bigger session timeout to "survive"
> the loss of the leader.
> Is it possible to do anything about this and have a fast leader
> election even if the snapshot is big?
> Botond Hejj