L1WriteSynchronizer can cause locking with concurrent gets when value is not present ------------------------------------------------------------------------------------ Key: ISPN-3956 URL: https://issues.jboss.org/browse/ISPN-3956 Project: Infinispan Issue Type: Bug Components: L1 Affects Versions: 6.0.0.Final Reporter: William Burns Assignee: William Burns Fix For: 7.0.0.Alpha1, 7.0.0.Final This has been seen previously only on IBM JDK 6 ISPN-3889, however an end user also now can reproduce this issue https://community.jboss.org/thread/236590 The issue is that we don't set the remove lookup value to be null when nothing is found and thus any threads that are waiting for the remote lookup were never notified of this.