title: Automatic Hazelcast WAN Sync
body: <p>In the event of a cluster going down and then being restarted how can i maintain synchronously between cluster1 and cluster2?</p>
  
  <p>They both have persistent data and active wan between each other but in the event that cluster2's wan queue is full while cluster1 is down, eventually when cluster1 goes back up the data centers would be out of sync.</p>
  
  <p>Looking at the hazelcast documentation i see there is a way to initiate wan sync via man center as well as delta wan sync.
  Is there a way to initiate this on the startup of the cluster instead? </p>
  
  <p>I assume i could have an event on cluster start which sends a rest call to man center to do this however i am wondering if its possible with rest calls and/or preferably without using man center at all. </p>