I don't think there is a plan to have this patch for < 3.5.0 since those versions use a static configuration. As mentioned here by others its not clear how to account for node failures as the system is asynchronous.
The leader maintains a count of synced followers, perhaps you could use this count some how ? I'm not sure if its exported though. On Wed, Oct 1, 2014 at 12:23 PM, Biju N <[email protected]> wrote: > Thanks Alexander. Is there a plan to make the patch available in prior > versions. Also if it is not planned, it would be helpful to have an > attribute to store the actual count of the nodes in the quorum which can be > used for monitoring along with the quorum size attribute currently > available. > > On Wed, Oct 1, 2014 at 3:00 PM, Alexander Shraer <[email protected]> > wrote: > > > if a node gets added JMX should reflect this ( > > https://issues.apache.org/jira/browse/ZOOKEEPER-1659) > > > > On Wed, Oct 1, 2014 at 11:04 AM, Biju N <[email protected]> wrote: > > > > > If we can have an additional JMX attribute which stores the quorum size > > at > > > the node sees it that should help. The leader node should have the > > correct > > > quorum size at any point in time. Correct? > > > > > > On Wed, Oct 1, 2014 at 12:06 PM, Dutch Meyer <[email protected]> wrote: > > > > > > > Different zookeeper servers may have different views of who has > failed. > > > If > > > > a node is failed from the perspective of some members of the ensemble > > but > > > > not others, what ;would you expect to be reported? > > > > > > > > > > > > On Wed, Oct 1, 2014 at 8:38 AM, Biju N <[email protected]> > wrote: > > > > > > > > > Looks like JMX data is static based zoo.cfg. If any of the nodes > fail > > > or > > > > a > > > > > new node gets added, the size doesn't gets updated until zoo.cfg is > > > > > updated. Let me know otherwise. > > > > > > > > > > On Wed, Oct 1, 2014 at 10:19 AM, Kuba Lekstan <[email protected]> > > > wrote: > > > > > > > > > > > AFAIR JMX shows this. > > > > > > > > > > > > 2014-09-30 18:53 GMT+02:00 Biju N <[email protected]>: > > > > > > > > > > > > > Hi There, > > > > > > > What is the best approach to find the number of active > servers > > > in > > > > > the > > > > > > > quorum? Thank you in advance for your input. > > > > > > > > > > > > > > - Biju > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > -=-Dutch > > > > > > > > > >
