[infinispan-issues] [JBoss JIRA] Commented: (ISPN-976) TopologyAwareConsistentHash does not work when numOwners=1 and rehashing

TopologyAwareConsistentHash does not work when numOwners=1 and rehashing ------------------------------------------------------------------------- Key: ISPN-976 URL: https://issues.jboss.org/browse/ISPN-976 Project: Infinispan Issue Type: Bug Affects Versions: 4.2.1.FINAL Reporter: Mircea Markus Assignee: Mircea Markus Priority: Critical Fix For: 4.2.2.BETA1, 4.2.2.FINAL Specifically, the problem is with getStateProvidersOnLeave. Assume you have nodes 1, 2, and 4. Now node 3 joins. This method will iterate over each address and will skip the joiner (node3). For the remaining nodes it will call getOwners e.g. - getOwners(node1), getOwners(node2), getOwners(node3) This method will always begin by adding the first node in the tailMap which is the address that is being iterated over. Since numOwners is set to 1 it skips the while loop and returns the result. So... getOwners(1) returns {node1} getOwners(2) returns {node2} getOwners(4) returns {node4} Now we return to getStateProvidersOnLeave It now checks to see if the result contains the joiner (node3). However, it can never contain the joiner.