From b0e3135120c6233dc56ddd0cea183cce62e5ccb8 Mon Sep 17 00:00:00 2001
From: Cameron Thornton <camthornton@google.com>
Date: Fri, 24 Feb 2023 14:59:50 -0600
Subject: [PATCH] force recreate on master_config.num_instances (#7349)

---
 .../terraform/resources/resource_dataproc_cluster.go.erb       | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mmv1/third_party/terraform/resources/resource_dataproc_cluster.go.erb b/mmv1/third_party/terraform/resources/resource_dataproc_cluster.go.erb
index 2c7a557d6560..4841504883e6 100644
--- a/mmv1/third_party/terraform/resources/resource_dataproc_cluster.go.erb
+++ b/mmv1/third_party/terraform/resources/resource_dataproc_cluster.go.erb
@@ -1155,6 +1155,8 @@ func instanceConfigSchema(parent string) *schema.Schema {
 		"cluster_config.0." + parent + ".0.accelerators",
 	}
 
+	masterConfig := strings.Contains(parent, "master")
+
 	return &schema.Schema{
 		Type:         schema.TypeList,
 		Optional:     true,
@@ -1167,6 +1169,7 @@ func instanceConfigSchema(parent string) *schema.Schema {
 				"num_instances": {
 					Type:         schema.TypeInt,
 					Optional:     true,
+					ForceNew:     masterConfig,
 					Computed:     true,
 					Description:  `Specifies the number of master/worker nodes to create. If not specified, GCP will default to a predetermined computed value.`,
 					AtLeastOneOf: instanceConfigKeys,