Add missing ClusterEventType enum values to fix deserialization failures

csharp/Microsoft.Azure.Databricks.Client.Test/ClustersApiClientTest.cs

@@ -714,4 +714,38 @@ public async Task TestEvents()
             Times.Once()
         );
     }
+
+    [TestMethod]
+    public void TestNewClusterEventTypesDeserialization()
+    {
+        // Test that all new ClusterEventType values can be deserialized correctly
+        var newEventTypes = new[]
+        {
+            "NODE_BLACKLISTED",
+            "PINNED",
+            "UNPINNED",
+            "NODE_EXCLUDED_DECOMMISSIONED",
+            "ADD_NODES_FAILED",
+            "AUTOSCALING_BACKOFF",
+            "AUTOMATIC_CLUSTER_UPDATE",
+            "AUTOSCALING_FAILED",
+            "DECOMMISSION_STARTED",
+            "DECOMMISSION_ENDED"
+        };
+
+        foreach (var eventType in newEventTypes)
+        {
+            var json = $@"
+                {{
+                    ""cluster_id"": ""test-cluster"",
+                    ""timestamp"": 1619471498409,
+                    ""type"": ""{eventType}"",
+                    ""details"": {{}}
+                }}";
+
+            var clusterEvent = JsonSerializer.Deserialize<ClusterEvent>(json, Options);
+            Assert.IsNotNull(clusterEvent, $"Failed to deserialize ClusterEvent with type {eventType}");
+            Assert.AreEqual(eventType, clusterEvent.Type.ToString(), $"ClusterEventType {eventType} did not deserialize correctly");
+        }
+    }
 }

csharp/Microsoft.Azure.Databricks.Client/Models/ClusterEventType.cs

@@ -108,5 +108,55 @@ public enum ClusterEventType
     /// <summary>
     /// Usage report containing the total and unused instance minutes of the autoscaling cluster over the last hour.
     /// </summary>
-    AUTOSCALING_STATS_REPORT
+    AUTOSCALING_STATS_REPORT,
+
+    /// <summary>
+    /// Indicates that a node has been blacklisted.
+    /// </summary>
+    NODE_BLACKLISTED,
+
+    /// <summary>
+    /// Indicates that a cluster has been pinned.
+    /// </summary>
+    PINNED,
+
+    /// <summary>
+    /// Indicates that a cluster has been unpinned.
+    /// </summary>
+    UNPINNED,
+
+    /// <summary>
+    /// Indicates that a node has been excluded or decommissioned.
+    /// </summary>
+    NODE_EXCLUDED_DECOMMISSIONED,
+
+    /// <summary>
+    /// Indicates that adding nodes to the cluster has failed.
+    /// </summary>
+    ADD_NODES_FAILED,
+
+    /// <summary>
+    /// Indicates that autoscaling has been backed off.
+    /// </summary>
+    AUTOSCALING_BACKOFF,
+
+    /// <summary>
+    /// Indicates that the cluster has been automatically updated.
+    /// </summary>
+    AUTOMATIC_CLUSTER_UPDATE,
+
+    /// <summary>
+    /// Indicates that autoscaling has failed.
+    /// </summary>
+    AUTOSCALING_FAILED,
+
+    /// <summary>
+    /// Indicates that node decommissioning has started.
+    /// </summary>
+    DECOMMISSION_STARTED,
+
+    /// <summary>
+    /// Indicates that node decommissioning has ended.
+    /// </summary>
+    DECOMMISSION_ENDED
 }