Fix our calls to d.Set that returned errors.

google/data_source_google_compute_image.go

@@ -3,6 +3,7 @@ package google
 import (
 	"fmt"
 	"log"
+	"strconv"
 	"strings"
 
 	"github.com/hashicorp/terraform/helper/schema"
@@ -149,7 +150,7 @@ func dataSourceGoogleComputeImageRead(d *schema.ResourceData, meta interface{})
 	d.Set("creation_timestamp", image.CreationTimestamp)
 	d.Set("description", image.Description)
 	d.Set("disk_size_gb", image.DiskSizeGb)
-	d.Set("image_id", image.Id)
+	d.Set("image_id", strconv.FormatUint(image.Id, 10))
 	d.Set("image_encryption_key_sha256", ieks256)
 	d.Set("label_fingerprint", image.LabelFingerprint)
 	d.Set("labels", image.Labels)

google/data_source_google_compute_region_instance_group.go

@@ -3,13 +3,14 @@ package google
 import (
 	"errors"
 	"fmt"
-	"github.com/hashicorp/terraform/helper/schema"
-	compute "google.golang.org/api/compute/v1"
-	"google.golang.org/api/googleapi"
 	"log"
 	"net/url"
 	"strconv"
 	"strings"
+
+	"github.com/hashicorp/terraform/helper/schema"
+	compute "google.golang.org/api/compute/v1"
+	"google.golang.org/api/googleapi"
 )
 
 func dataSourceGoogleComputeRegionInstanceGroup() *schema.Resource {
@@ -137,7 +138,6 @@ func dataSourceComputeRegionInstanceGroupRead(d *schema.ResourceData, meta inter
 	} else {
 		d.Set("instances", flattenInstancesWithNamedPorts(members.Items))
 	}
-	d.Set("kind", instanceGroup.Kind)
 	d.SetId(strconv.FormatUint(instanceGroup.Id, 16))
 	d.Set("self_link", instanceGroup.SelfLink)
 	d.Set("name", name)

google/data_source_google_compute_region_instance_group_test.go

@@ -2,21 +2,23 @@ package google
 
 import (
 	"fmt"
+	"testing"
+
 	"github.com/hashicorp/terraform/helper/acctest"
 	"github.com/hashicorp/terraform/helper/resource"
-	"testing"
 )
 
 func TestAccDataSourceRegionInstanceGroup(t *testing.T) {
 	t.Parallel()
+	name := "acctest-" + acctest.RandString(6)
 	resource.Test(t, resource.TestCase{
 		PreCheck:  func() { testAccPreCheck(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccDataSourceRegionInstanceGroup_basic("foobarbaz"),
+				Config: testAccDataSourceRegionInstanceGroup_basic(name),
 				Check: resource.ComposeTestCheckFunc(
-					resource.TestCheckResourceAttr("data.google_compute_region_instance_group.data_source", "name", "foobarbaz"),
+					resource.TestCheckResourceAttr("data.google_compute_region_instance_group.data_source", "name", name),
 					resource.TestCheckResourceAttr("data.google_compute_region_instance_group.data_source", "project", getTestProjectFromEnv()),
 					resource.TestCheckResourceAttr("data.google_compute_region_instance_group.data_source", "instances.#", "10")),
 			},

google/resource_compute_backend_service.go

@@ -417,8 +417,8 @@ func expandBackends(configured []interface{}) ([]*compute.Backend, error) {
 	return backends, nil
 }
 
-func flattenBackends(backends []*compute.Backend) []map[string]interface{} {
-	result := make([]map[string]interface{}, 0, len(backends))
+func flattenBackends(backends []*compute.Backend) *schema.Set {
+	result := make([]interface{}, 0, len(backends))
 
 	for _, b := range backends {
 		data := make(map[string]interface{})
@@ -433,7 +433,7 @@ func flattenBackends(backends []*compute.Backend) []map[string]interface{} {
 		result = append(result, data)
 	}
 
-	return result
+	return schema.NewSet(resourceGoogleComputeBackendServiceBackendHash, result)
 }
 
 func expandBackendService(d *schema.ResourceData) (*compute.BackendService, error) {

google/resource_compute_project_metadata.go

@@ -119,7 +119,7 @@ func resourceComputeProjectMetadataRead(d *schema.ResourceData, meta interface{}
 		return fmt.Errorf("Error setting metadata: %s", err)
 	}
 
-	d.Set("project", project)
+	d.Set("project", projectID)
 	d.SetId("common_metadata")
 
 	return nil

google/resource_compute_region_backend_service.go

@@ -211,7 +211,10 @@ func resourceComputeRegionBackendServiceRead(d *schema.ResourceData, meta interf
 	d.Set("connection_draining_timeout_sec", service.ConnectionDraining.DrainingTimeoutSec)
 	d.Set("fingerprint", service.Fingerprint)
 	d.Set("self_link", service.SelfLink)
-	d.Set("backend", flattenBackends(service.Backends))
+	err = d.Set("backend", flattenRegionBackends(service.Backends))
+	if err != nil {
+		return err
+	}
 	d.Set("health_checks", service.HealthChecks)
 	d.Set("project", project)
 	d.Set("region", region)
@@ -335,3 +338,17 @@ func resourceGoogleComputeRegionBackendServiceBackendHash(v interface{}) int {
 
 	return hashcode.String(buf.String())
 }
+
+func flattenRegionBackends(backends []*compute.Backend) *schema.Set {
+	result := make([]interface{}, 0, len(backends))
+
+	for _, b := range backends {
+		data := make(map[string]interface{})
+
+		data["description"] = b.Description
+		data["group"] = b.Group
+		result = append(result, data)
+	}
+
+	return schema.NewSet(resourceGoogleComputeRegionBackendServiceBackendHash, result)
+}

google/resource_dataproc_cluster.go

@@ -701,7 +701,10 @@ func resourceDataprocClusterRead(d *schema.ResourceData, meta interface{}) error
 		return err
 	}
 
-	d.Set("cluster_config", cfg)
+	err = d.Set("cluster_config", cfg)
+	if err != nil {
+		return err
+	}
 	return nil
 }
 
@@ -724,7 +727,7 @@ func flattenClusterConfig(d *schema.ResourceData, cfg *dataproc.ClusterConfig) (
 		if err != nil {
 			return nil, err
 		}
-		data["intialization_action"] = val
+		data["initialization_action"] = val
 	}
 	return []map[string]interface{}{data}, nil
 }