#3384
  • Created on
    2013-05-23 04:17
  • Reported by
    rkuhn
  • Status
    New
  • Priority
    Normal (3)
  • Assigned to
    -
  • Milestone
    Rollins
  • Plan Level
    Subtask
  • Due Date
    -

Attachments

Related Tickets

rethink cluster joining procedure

scenario:

  • Join is sent from A to member B
  • Welcome is sent from B to A but lost
  • A is formally part of the cluster, will transition to UP and then UNREACHABLE
  • the cluster cannot reach convergence without DOWNing A
  • A cannot join the cluster anymore (because it is quarantined)

possible solution:

  • make JOINING phase symmetric to LEAVING by adding a JOIN_REQUESTED which is similar to EXITING in its function, making sure that the transition to UP only happens if A has seen itself JOINING_REQUESTED
  • possibly optimize this away by having A put itself into the Welcome gossip instead of letting B do it
User picture
  on 2013-05-23 04:17 *
By rkuhn
Milestone set to Rollins