diff --git a/packages/google-cloud-dataproc/src/v1/autoscaling_policy_service_client.ts b/packages/google-cloud-dataproc/src/v1/autoscaling_policy_service_client.ts
index 8be9e383a06..38629e31a3b 100644
--- a/packages/google-cloud-dataproc/src/v1/autoscaling_policy_service_client.ts
+++ b/packages/google-cloud-dataproc/src/v1/autoscaling_policy_service_client.ts
@@ -49,6 +49,7 @@ const version = require('../../../package.json').version;
 export class AutoscalingPolicyServiceClient {
   private _terminated = false;
   private _opts: ClientOptions;
+  private _providedCustomServicePath: boolean;
   private _gaxModule: typeof gax | typeof gax.fallback;
   private _gaxGrpc: gax.GrpcClient | gax.fallback.GrpcClient;
   private _protos: {};
@@ -60,6 +61,7 @@ export class AutoscalingPolicyServiceClient {
     longrunning: {},
     batching: {},
   };
+  warn: (code: string, message: string, warnType?: string) => void;
   innerApiCalls: {[name: string]: Function};
   pathTemplates: {[name: string]: gax.PathTemplate};
   autoscalingPolicyServiceStub?: Promise<{[name: string]: Function}>;
@@ -104,6 +106,9 @@ export class AutoscalingPolicyServiceClient {
       .constructor as typeof AutoscalingPolicyServiceClient;
     const servicePath =
       opts?.servicePath || opts?.apiEndpoint || staticMembers.servicePath;
+    this._providedCustomServicePath = !!(
+      opts?.servicePath || opts?.apiEndpoint
+    );
     const port = opts?.port || staticMembers.port;
     const clientConfig = opts?.clientConfig ?? {};
     const fallback =
@@ -202,6 +207,9 @@ export class AutoscalingPolicyServiceClient {
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
     this.innerApiCalls = {};
+
+    // Add a warn function to the client constructor so it can be easily tested.
+    this.warn = gax.warn;
   }
 
   /**
@@ -231,7 +239,8 @@ export class AutoscalingPolicyServiceClient {
         : // eslint-disable-next-line @typescript-eslint/no-explicit-any
           (this._protos as any).google.cloud.dataproc.v1
             .AutoscalingPolicyService,
-      this._opts
+      this._opts,
+      this._providedCustomServicePath
     ) as Promise<{[method: string]: Function}>;
 
     // Iterate over each of the methods that the service provides
diff --git a/packages/google-cloud-dataproc/src/v1/cluster_controller_client.ts b/packages/google-cloud-dataproc/src/v1/cluster_controller_client.ts
index 8ef94af1a87..201c8b6aa6e 100644
--- a/packages/google-cloud-dataproc/src/v1/cluster_controller_client.ts
+++ b/packages/google-cloud-dataproc/src/v1/cluster_controller_client.ts
@@ -50,6 +50,7 @@ const version = require('../../../package.json').version;
 export class ClusterControllerClient {
   private _terminated = false;
   private _opts: ClientOptions;
+  private _providedCustomServicePath: boolean;
   private _gaxModule: typeof gax | typeof gax.fallback;
   private _gaxGrpc: gax.GrpcClient | gax.fallback.GrpcClient;
   private _protos: {};
@@ -61,6 +62,7 @@ export class ClusterControllerClient {
     longrunning: {},
     batching: {},
   };
+  warn: (code: string, message: string, warnType?: string) => void;
   innerApiCalls: {[name: string]: Function};
   pathTemplates: {[name: string]: gax.PathTemplate};
   operationsClient: gax.OperationsClient;
@@ -105,6 +107,9 @@ export class ClusterControllerClient {
     const staticMembers = this.constructor as typeof ClusterControllerClient;
     const servicePath =
       opts?.servicePath || opts?.apiEndpoint || staticMembers.servicePath;
+    this._providedCustomServicePath = !!(
+      opts?.servicePath || opts?.apiEndpoint
+    );
     const port = opts?.port || staticMembers.port;
     const clientConfig = opts?.clientConfig ?? {};
     const fallback =
@@ -282,6 +287,9 @@ export class ClusterControllerClient {
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
     this.innerApiCalls = {};
+
+    // Add a warn function to the client constructor so it can be easily tested.
+    this.warn = gax.warn;
   }
 
   /**
@@ -310,7 +318,8 @@ export class ClusterControllerClient {
           )
         : // eslint-disable-next-line @typescript-eslint/no-explicit-any
           (this._protos as any).google.cloud.dataproc.v1.ClusterController,
-      this._opts
+      this._opts,
+      this._providedCustomServicePath
     ) as Promise<{[method: string]: Function}>;
 
     // Iterate over each of the methods that the service provides
diff --git a/packages/google-cloud-dataproc/src/v1/job_controller_client.ts b/packages/google-cloud-dataproc/src/v1/job_controller_client.ts
index 23a6e8f8919..e5db782e840 100644
--- a/packages/google-cloud-dataproc/src/v1/job_controller_client.ts
+++ b/packages/google-cloud-dataproc/src/v1/job_controller_client.ts
@@ -49,6 +49,7 @@ const version = require('../../../package.json').version;
 export class JobControllerClient {
   private _terminated = false;
   private _opts: ClientOptions;
+  private _providedCustomServicePath: boolean;
   private _gaxModule: typeof gax | typeof gax.fallback;
   private _gaxGrpc: gax.GrpcClient | gax.fallback.GrpcClient;
   private _protos: {};
@@ -60,6 +61,7 @@ export class JobControllerClient {
     longrunning: {},
     batching: {},
   };
+  warn: (code: string, message: string, warnType?: string) => void;
   innerApiCalls: {[name: string]: Function};
   pathTemplates: {[name: string]: gax.PathTemplate};
   operationsClient: gax.OperationsClient;
@@ -104,6 +106,9 @@ export class JobControllerClient {
     const staticMembers = this.constructor as typeof JobControllerClient;
     const servicePath =
       opts?.servicePath || opts?.apiEndpoint || staticMembers.servicePath;
+    this._providedCustomServicePath = !!(
+      opts?.servicePath || opts?.apiEndpoint
+    );
     const port = opts?.port || staticMembers.port;
     const clientConfig = opts?.clientConfig ?? {};
     const fallback =
@@ -223,6 +228,9 @@ export class JobControllerClient {
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
     this.innerApiCalls = {};
+
+    // Add a warn function to the client constructor so it can be easily tested.
+    this.warn = gax.warn;
   }
 
   /**
@@ -251,7 +259,8 @@ export class JobControllerClient {
           )
         : // eslint-disable-next-line @typescript-eslint/no-explicit-any
           (this._protos as any).google.cloud.dataproc.v1.JobController,
-      this._opts
+      this._opts,
+      this._providedCustomServicePath
     ) as Promise<{[method: string]: Function}>;
 
     // Iterate over each of the methods that the service provides
diff --git a/packages/google-cloud-dataproc/src/v1/workflow_template_service_client.ts b/packages/google-cloud-dataproc/src/v1/workflow_template_service_client.ts
index 28d2f74c136..3a3cf992d01 100644
--- a/packages/google-cloud-dataproc/src/v1/workflow_template_service_client.ts
+++ b/packages/google-cloud-dataproc/src/v1/workflow_template_service_client.ts
@@ -50,6 +50,7 @@ const version = require('../../../package.json').version;
 export class WorkflowTemplateServiceClient {
   private _terminated = false;
   private _opts: ClientOptions;
+  private _providedCustomServicePath: boolean;
   private _gaxModule: typeof gax | typeof gax.fallback;
   private _gaxGrpc: gax.GrpcClient | gax.fallback.GrpcClient;
   private _protos: {};
@@ -61,6 +62,7 @@ export class WorkflowTemplateServiceClient {
     longrunning: {},
     batching: {},
   };
+  warn: (code: string, message: string, warnType?: string) => void;
   innerApiCalls: {[name: string]: Function};
   pathTemplates: {[name: string]: gax.PathTemplate};
   operationsClient: gax.OperationsClient;
@@ -106,6 +108,9 @@ export class WorkflowTemplateServiceClient {
       .constructor as typeof WorkflowTemplateServiceClient;
     const servicePath =
       opts?.servicePath || opts?.apiEndpoint || staticMembers.servicePath;
+    this._providedCustomServicePath = !!(
+      opts?.servicePath || opts?.apiEndpoint
+    );
     const port = opts?.port || staticMembers.port;
     const clientConfig = opts?.clientConfig ?? {};
     const fallback =
@@ -251,6 +256,9 @@ export class WorkflowTemplateServiceClient {
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
     this.innerApiCalls = {};
+
+    // Add a warn function to the client constructor so it can be easily tested.
+    this.warn = gax.warn;
   }
 
   /**
@@ -280,7 +288,8 @@ export class WorkflowTemplateServiceClient {
         : // eslint-disable-next-line @typescript-eslint/no-explicit-any
           (this._protos as any).google.cloud.dataproc.v1
             .WorkflowTemplateService,
-      this._opts
+      this._opts,
+      this._providedCustomServicePath
     ) as Promise<{[method: string]: Function}>;
 
     // Iterate over each of the methods that the service provides
diff --git a/packages/google-cloud-dataproc/src/v1beta2/autoscaling_policy_service_client.ts b/packages/google-cloud-dataproc/src/v1beta2/autoscaling_policy_service_client.ts
index 8df160436ac..b3ba72f140c 100644
--- a/packages/google-cloud-dataproc/src/v1beta2/autoscaling_policy_service_client.ts
+++ b/packages/google-cloud-dataproc/src/v1beta2/autoscaling_policy_service_client.ts
@@ -49,6 +49,7 @@ const version = require('../../../package.json').version;
 export class AutoscalingPolicyServiceClient {
   private _terminated = false;
   private _opts: ClientOptions;
+  private _providedCustomServicePath: boolean;
   private _gaxModule: typeof gax | typeof gax.fallback;
   private _gaxGrpc: gax.GrpcClient | gax.fallback.GrpcClient;
   private _protos: {};
@@ -60,6 +61,7 @@ export class AutoscalingPolicyServiceClient {
     longrunning: {},
     batching: {},
   };
+  warn: (code: string, message: string, warnType?: string) => void;
   innerApiCalls: {[name: string]: Function};
   pathTemplates: {[name: string]: gax.PathTemplate};
   autoscalingPolicyServiceStub?: Promise<{[name: string]: Function}>;
@@ -104,6 +106,9 @@ export class AutoscalingPolicyServiceClient {
       .constructor as typeof AutoscalingPolicyServiceClient;
     const servicePath =
       opts?.servicePath || opts?.apiEndpoint || staticMembers.servicePath;
+    this._providedCustomServicePath = !!(
+      opts?.servicePath || opts?.apiEndpoint
+    );
     const port = opts?.port || staticMembers.port;
     const clientConfig = opts?.clientConfig ?? {};
     const fallback =
@@ -202,6 +207,9 @@ export class AutoscalingPolicyServiceClient {
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
     this.innerApiCalls = {};
+
+    // Add a warn function to the client constructor so it can be easily tested.
+    this.warn = gax.warn;
   }
 
   /**
@@ -231,7 +239,8 @@ export class AutoscalingPolicyServiceClient {
         : // eslint-disable-next-line @typescript-eslint/no-explicit-any
           (this._protos as any).google.cloud.dataproc.v1beta2
             .AutoscalingPolicyService,
-      this._opts
+      this._opts,
+      this._providedCustomServicePath
     ) as Promise<{[method: string]: Function}>;
 
     // Iterate over each of the methods that the service provides
diff --git a/packages/google-cloud-dataproc/src/v1beta2/cluster_controller_client.ts b/packages/google-cloud-dataproc/src/v1beta2/cluster_controller_client.ts
index 4943f38eef1..d30fc8c3eed 100644
--- a/packages/google-cloud-dataproc/src/v1beta2/cluster_controller_client.ts
+++ b/packages/google-cloud-dataproc/src/v1beta2/cluster_controller_client.ts
@@ -50,6 +50,7 @@ const version = require('../../../package.json').version;
 export class ClusterControllerClient {
   private _terminated = false;
   private _opts: ClientOptions;
+  private _providedCustomServicePath: boolean;
   private _gaxModule: typeof gax | typeof gax.fallback;
   private _gaxGrpc: gax.GrpcClient | gax.fallback.GrpcClient;
   private _protos: {};
@@ -61,6 +62,7 @@ export class ClusterControllerClient {
     longrunning: {},
     batching: {},
   };
+  warn: (code: string, message: string, warnType?: string) => void;
   innerApiCalls: {[name: string]: Function};
   pathTemplates: {[name: string]: gax.PathTemplate};
   operationsClient: gax.OperationsClient;
@@ -105,6 +107,9 @@ export class ClusterControllerClient {
     const staticMembers = this.constructor as typeof ClusterControllerClient;
     const servicePath =
       opts?.servicePath || opts?.apiEndpoint || staticMembers.servicePath;
+    this._providedCustomServicePath = !!(
+      opts?.servicePath || opts?.apiEndpoint
+    );
     const port = opts?.port || staticMembers.port;
     const clientConfig = opts?.clientConfig ?? {};
     const fallback =
@@ -257,6 +262,9 @@ export class ClusterControllerClient {
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
     this.innerApiCalls = {};
+
+    // Add a warn function to the client constructor so it can be easily tested.
+    this.warn = gax.warn;
   }
 
   /**
@@ -285,7 +293,8 @@ export class ClusterControllerClient {
           )
         : // eslint-disable-next-line @typescript-eslint/no-explicit-any
           (this._protos as any).google.cloud.dataproc.v1beta2.ClusterController,
-      this._opts
+      this._opts,
+      this._providedCustomServicePath
     ) as Promise<{[method: string]: Function}>;
 
     // Iterate over each of the methods that the service provides
diff --git a/packages/google-cloud-dataproc/src/v1beta2/job_controller_client.ts b/packages/google-cloud-dataproc/src/v1beta2/job_controller_client.ts
index dbee17ff467..e4419b6bb40 100644
--- a/packages/google-cloud-dataproc/src/v1beta2/job_controller_client.ts
+++ b/packages/google-cloud-dataproc/src/v1beta2/job_controller_client.ts
@@ -49,6 +49,7 @@ const version = require('../../../package.json').version;
 export class JobControllerClient {
   private _terminated = false;
   private _opts: ClientOptions;
+  private _providedCustomServicePath: boolean;
   private _gaxModule: typeof gax | typeof gax.fallback;
   private _gaxGrpc: gax.GrpcClient | gax.fallback.GrpcClient;
   private _protos: {};
@@ -60,6 +61,7 @@ export class JobControllerClient {
     longrunning: {},
     batching: {},
   };
+  warn: (code: string, message: string, warnType?: string) => void;
   innerApiCalls: {[name: string]: Function};
   pathTemplates: {[name: string]: gax.PathTemplate};
   operationsClient: gax.OperationsClient;
@@ -104,6 +106,9 @@ export class JobControllerClient {
     const staticMembers = this.constructor as typeof JobControllerClient;
     const servicePath =
       opts?.servicePath || opts?.apiEndpoint || staticMembers.servicePath;
+    this._providedCustomServicePath = !!(
+      opts?.servicePath || opts?.apiEndpoint
+    );
     const port = opts?.port || staticMembers.port;
     const clientConfig = opts?.clientConfig ?? {};
     const fallback =
@@ -223,6 +228,9 @@ export class JobControllerClient {
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
     this.innerApiCalls = {};
+
+    // Add a warn function to the client constructor so it can be easily tested.
+    this.warn = gax.warn;
   }
 
   /**
@@ -251,7 +259,8 @@ export class JobControllerClient {
           )
         : // eslint-disable-next-line @typescript-eslint/no-explicit-any
           (this._protos as any).google.cloud.dataproc.v1beta2.JobController,
-      this._opts
+      this._opts,
+      this._providedCustomServicePath
     ) as Promise<{[method: string]: Function}>;
 
     // Iterate over each of the methods that the service provides
diff --git a/packages/google-cloud-dataproc/src/v1beta2/workflow_template_service_client.ts b/packages/google-cloud-dataproc/src/v1beta2/workflow_template_service_client.ts
index 740c18992b9..53472f61d7e 100644
--- a/packages/google-cloud-dataproc/src/v1beta2/workflow_template_service_client.ts
+++ b/packages/google-cloud-dataproc/src/v1beta2/workflow_template_service_client.ts
@@ -50,6 +50,7 @@ const version = require('../../../package.json').version;
 export class WorkflowTemplateServiceClient {
   private _terminated = false;
   private _opts: ClientOptions;
+  private _providedCustomServicePath: boolean;
   private _gaxModule: typeof gax | typeof gax.fallback;
   private _gaxGrpc: gax.GrpcClient | gax.fallback.GrpcClient;
   private _protos: {};
@@ -61,6 +62,7 @@ export class WorkflowTemplateServiceClient {
     longrunning: {},
     batching: {},
   };
+  warn: (code: string, message: string, warnType?: string) => void;
   innerApiCalls: {[name: string]: Function};
   pathTemplates: {[name: string]: gax.PathTemplate};
   operationsClient: gax.OperationsClient;
@@ -106,6 +108,9 @@ export class WorkflowTemplateServiceClient {
       .constructor as typeof WorkflowTemplateServiceClient;
     const servicePath =
       opts?.servicePath || opts?.apiEndpoint || staticMembers.servicePath;
+    this._providedCustomServicePath = !!(
+      opts?.servicePath || opts?.apiEndpoint
+    );
     const port = opts?.port || staticMembers.port;
     const clientConfig = opts?.clientConfig ?? {};
     const fallback =
@@ -251,6 +256,9 @@ export class WorkflowTemplateServiceClient {
     // of calling the API is handled in `google-gax`, with this code
     // merely providing the destination and request information.
     this.innerApiCalls = {};
+
+    // Add a warn function to the client constructor so it can be easily tested.
+    this.warn = gax.warn;
   }
 
   /**
@@ -280,7 +288,8 @@ export class WorkflowTemplateServiceClient {
         : // eslint-disable-next-line @typescript-eslint/no-explicit-any
           (this._protos as any).google.cloud.dataproc.v1beta2
             .WorkflowTemplateService,
-      this._opts
+      this._opts,
+      this._providedCustomServicePath
     ) as Promise<{[method: string]: Function}>;
 
     // Iterate over each of the methods that the service provides