[infinispan-issues] [JBoss JIRA] (ISPN-4743) Rebalance can hang after the coordinator and another node leave

Rebalance can hang after the coordinator and another node leave --------------------------------------------------------------- Key: ISPN-4743 URL: https://issues.jboss.org/browse/ISPN-4743 Project: Infinispan Issue Type: Bug Components: Core, State Transfer Affects Versions: 7.0.0.Beta2 Reporter: Dan Berindei Assignee: Dan Berindei Priority: Critical Labels: testsuite_stability Fix For: 7.0.0.CR1 This caused a failure in {{ClusterTopologyManagerTest.testAbruptLeaveAfterGetStatus}}. When the coordinator changes, the new coordinator first sends a {{CacheTopologyControlCommand(type=CH_UPDATE)}} to reset any ongoing rebalance, then a {{CacheTopologyControlCommand(type=REBALANCE_START)}} to start a new rebalance with the remaining members. If another node leaves afterwards, the coordinator sends yet another {{CacheTopologyControlCommand(type=CH_UPDATE)}} to remove the leaver from the CHs. If one node (in this case the coordinator itself) processes the last {{CH_UPDATE}} before the other two commands, it will fail to confirm the rebalance, and the cache will stay in "rebalancing" state until another node joins or leaves.