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=clu #19859 Relaxed constraints on downing old incarnation of rejoining node.

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* Automatic downing of old node incarnation when new tries to rejoin the cluster is performed even if old incarnation was left in Leaving or Exiting state.
* Added information to clustering docs about automatic downing of old incarnations when new tries to rejoin the cluster.
This commit is contained in:
adebski 2016-02-26 20:35:19 +01:00
parent 19d8da60ee
commit 472d404bbe
2 changed files with 4 additions and 2 deletions
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2
akka-cluster/src/main/scala/akka/cluster/ClusterDaemon.scala
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@ -496,7 +496,7 @@ private[cluster] class ClusterCoreDaemon(publisher: ActorRef) extends Actor with
// new node will retry join
logInfo("New incarnation of existing member [{}] is trying to join. " +
"Existing will be removed from the cluster and then new member will be allowed to join.", m)
if (m.status != Down && m.status != Leaving && m.status != Exiting)
if (m.status != Down)
downing(m.address)
case None ⇒
// remove the node from the failure detector

4
akka-docs/rst/common/cluster.rst
View file

@ -265,7 +265,9 @@ become a part of the cluster). To be able to move forward the state of the
``unreachable`` nodes must be changed. It must become ``reachable`` again or marked
as ``down``. If the node is to join the cluster again the actor system must be
restarted and go through the joining process again. The cluster can, through the
leader, also *auto-down* a node after a configured time of unreachability..
leader, also *auto-down* a node after a configured time of unreachability. If new
incarnation of unreachable node tries to rejoin the cluster old incarnation will be
marked as ``down`` and new incarnation can rejoin the cluster without manual intervention.
.. note:: If you have *auto-down* enabled and the failure detector triggers, you
can over time end up with a lot of single node clusters if you don't put