[infinispan-issues] [JBoss JIRA] (ISPN-1799) We should avoid using exceptions for flow control when acquiring state transfer lock

We should avoid using exceptions for flow control when acquiring state transfer lock ------------------------------------------------------------------------------------ Key: ISPN-1799 URL: https://issues.jboss.org/browse/ISPN-1799 Project: Infinispan Issue Type: Task Components: State transfer Affects Versions: 5.1.0.FINAL Reporter: Dan Berindei Assignee: Dan Berindei Fix For: 5.2.0.FINAL We currently use `StateTransferInProgressException` as a marker that a write command failed to acquire the state transfer lock and it should be retried. With ISPN-1704 I added another exception, StateTransferLockReacquisitionException, to signal that a write command failed to re-acquire the state transfer lock after it had already acquired it. These exceptions often appear in the logs and confuse users (see ISPN-1610), so it would be best to use special return values. We may also need a flag in the InvocationContext for StateTransferLockReacquisitionException.