[infinispan-issues] [JBoss JIRA] (ISPN-1275) ConsistentHash implementation producing same hash id for two different cluster nodes

ConsistentHash implementation producing same hash id for two different cluster nodes ------------------------------------------------------------------------------------ Key: ISPN-1275 URL: https://issues.jboss.org/browse/ISPN-1275 Project: Infinispan Issue Type: Bug Components: Distributed Cache Affects Versions: 5.0.0.FINAL Reporter: Galder Zamarreño Assignee: Manik Surtani Priority: Blocker Labels: consistent_hash Fix For: 5.1.0.BETA5, 5.1.0.FINAL Attachments: hashids.log While working on ISPN-1273, I've discovered that when virtual nodes are enabled, ConsistentHash.getHashIds(address) can return the same hash for two different cluster nodes. Example: with 500 virtual nodes, both NodeA-23181 and NodeB-39177 produce hash id *5289*. See attached log. Virtual nodes make the problem more apparent, however the problem exists regardless of vnodes being used.