Comment on NOT_SET

elastic · Aug 21, 2021 · bd8ef0c · bd8ef0c
1 parent eab60c3
commit bd8ef0c
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/server/src/main/java/org/elasticsearch/cluster/ClusterStatePublicationEvent.java b/server/src/main/java/org/elasticsearch/cluster/ClusterStatePublicationEvent.java
@@ -14,6 +14,9 @@
  */
 public class ClusterStatePublicationEvent {
 
+    /**
+     * Sentinel value so that we can assert each field is set once and only once on each successful event, and at most once on each failure.
+     */
     private static final long NOT_SET = -1L;
 
     private final String summary;