http://www.slony.info/bugzilla/show_bug.cgi?id=178

           Summary: More sophisticated FAILOVER
           Product: Slony-I
           Version: devel
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: low
         Component: slonik
        AssignedTo: slony1-bugs at lists.slony.info
        ReportedBy: cbbrowne at ca.afilias.info
                CC: slony1-bugs at lists.slony.info
   Estimated Hours: 0.0


General proposal, that FAILOVER be a much more sophisticated command, allowing:
* Dropping nodes considered dead
* Doing several failovers of sets as one request

Thus, something like:
<pre>
  failover (dead nodes=(1,2,4),
            set id=1, backup node=3,
            set id=2, backup node=5,
            set id=3, backup node=3);
</pre>

* Failover should check various conditions and abort if any are the case
** There need to be paths to support communications to let the new masters
catch up
** Slons need to be running for nodes that are needed to let masters catch up
** If a node hosts a subscription that cannot be kept that subscription may be
marked dead
*** Automatically kill that subscription?
*** Refuse failover until subscription is marked dead? 
This requires a dead subscription clause be added...

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