fix(kv): fix bucket update issue

bolt/bucket.go

@@ -6,8 +6,7 @@ import (
 	"fmt"
 	"time"
 
-	"github.com/coreos/bbolt"
-
+	bolt "github.com/coreos/bbolt"
 	platform "github.com/influxdata/influxdb"
 	platformcontext "github.com/influxdata/influxdb/context"
 	"github.com/influxdata/influxdb/kit/tracing"
@@ -557,8 +556,8 @@ func (c *Client) updateBucket(ctx context.Context, tx *bolt.Tx, id platform.ID,
 	}
 
 	if upd.Name != nil {
-		_, err := c.findBucketByName(ctx, tx, b.OrganizationID, *upd.Name)
-		if err == nil {
+		b0, err := c.findBucketByName(ctx, tx, b.OrganizationID, *upd.Name)
+		if err == nil && b0.ID != id {
 			return nil, &platform.Error{
 				Code: platform.EConflict,
 				Msg:  "bucket name is not unique",

inmem/bucket_service.go

@@ -294,10 +294,10 @@ func (s *Service) UpdateBucket(ctx context.Context, id platform.ID, upd platform
 		b.RetentionPeriod = *upd.RetentionPeriod
 	}
 
-	_, err = s.FindBucket(ctx, platform.BucketFilter{
+	b0, err := s.FindBucket(ctx, platform.BucketFilter{
 		Name: upd.Name,
 	})
-	if err == nil {
+	if err == nil && b0.ID != id {
 		return nil, &platform.Error{
 			Code: platform.EConflict,
 			Msg:  "bucket name is not unique",

kv/bucket.go

@@ -622,8 +622,8 @@ func (s *Service) updateBucket(ctx context.Context, tx Tx, id influxdb.ID, upd i
 	}
 
 	if upd.Name != nil {
-		_, err := s.findBucketByName(ctx, tx, b.OrganizationID, *upd.Name)
-		if err == nil {
+		b0, err := s.findBucketByName(ctx, tx, b.OrganizationID, *upd.Name)
+		if err == nil && b0.ID != id {
 			return nil, &influxdb.Error{
 				Code: influxdb.EConflict,
 				Msg:  "bucket name is not unique",

testing/bucket_service.go

@@ -1239,6 +1239,43 @@ func UpdateBucket(
 				},
 			},
 		},
+		{
+			name: "update retention and same name",
+			fields: BucketFields{
+				Organizations: []*platform.Organization{
+					{
+						Name: "theorg",
+						ID:   MustIDBase16(orgOneID),
+					},
+				},
+				Buckets: []*platform.Bucket{
+					{
+						ID:             MustIDBase16(bucketOneID),
+						OrganizationID: MustIDBase16(orgOneID),
+						Name:           "bucket1",
+					},
+					{
+						ID:             MustIDBase16(bucketTwoID),
+						OrganizationID: MustIDBase16(orgOneID),
+						Name:           "bucket2",
+					},
+				},
+			},
+			args: args{
+				id:        MustIDBase16(bucketTwoID),
+				retention: 101,
+				name:      "bucket2",
+			},
+			wants: wants{
+				bucket: &platform.Bucket{
+					ID:              MustIDBase16(bucketTwoID),
+					OrganizationID:  MustIDBase16(orgOneID),
+					Organization:    "theorg",
+					Name:            "bucket2",
+					RetentionPeriod: 101 * time.Minute,
+				},
+			},
+		},
 	}
 
 	for _, tt := range tests {