Add a comment warning about serialization format changes

1 files changed, 4 insertions, 4 deletions

diff --git a/node-repository/src/main/java/com/yahoo/vespa/hosted/provision/persistence/NodeSerializer.java b/node-repository/src/main/java/com/yahoo/vespa/hosted/provision/persistence/NodeSerializer.java
index d38a6e5031c..424889caf72 100644
--- a/node-repository/src/main/java/com/yahoo/vespa/hosted/provision/persistence/NodeSerializer.java
+++ b/node-repository/src/main/java/com/yahoo/vespa/hosted/provision/persistence/NodeSerializer.java
@@ -44,12 +44,12 @@ import java.util.function.UnaryOperator;
  */
 public class NodeSerializer {
 
-    // WARNING: Since there are multiple config servers in a cluster and they upgrade one by one
-    //          (and rewrite all nodes on startup),
-    //          changes to the serialized format must be made such that what is serialized on version N+1
-    //          can be read by version N:
+    // WARNING: Since there are multiple servers in a ZooKeeper cluster and they upgrade one by one
+    //          (and rewrite all nodes on startup), changes to the serialized format must be made
+    //          such that what is serialized on version N+1 can be read by version N:
     //          - ADDING FIELDS: Always ok
     //          - REMOVING FIELDS: Stop reading the field first. Stop writing it on a later version.
+    //          - CHANGING THE FORMAT OF A FIELD: Don't do it bro.
 
     /** The configured node flavors */
     private final NodeFlavors flavors;