diff --git a/CHANGES.txt b/CHANGES.txt
index ac1b374fbb9..75527ecd361 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -31,7 +31,9 @@ Release 0.91.0 - Unreleased
    HBASE-3476  HFile -m option need not scan key values
                (Prakash Khemani via Lars George)
    HBASE-3481  max seq id in flushed file can be larger than its correct value 
-   	       causing data loss during recovery
+   	           causing data loss during recovery
+   HBASE-3493  HMaster sometimes hangs during initialization due to missing
+               notify call (Bruno Dumon via Stack)
 
 
   IMPROVEMENTS
diff --git a/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java b/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
index 6755f31fd5f..f14a0edb22a 100644
--- a/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
+++ b/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
@@ -588,6 +588,7 @@ public class AssignmentManager extends ZooKeeperListener {
         " on " + hsi);
       this.regions.put(regionInfo, serverInfo);
       addToServers(serverInfo, regionInfo);
+      this.regions.notifyAll();
     }
     // Remove plan if one.
     clearRegionPlan(regionInfo);