Merge pull request #156984 from mw5h/backportrelease-25.4-154868

release-25.4: backfill: skip TestVectorIndexMergingDuringBackfillWithPrefix under race (#156984)

Co-Authored-By: Yahor Yuzefovich <yahor@cockroachlabs.com>

Author: yuzefovich

pkg/sql/backfill/BUILD.bazel

@@ -87,6 +87,7 @@ go_test(
         "//pkg/sql/sem/catid",
         "//pkg/sql/sem/eval",
         "//pkg/testutils/serverutils",
+        "//pkg/testutils/skip",
         "//pkg/testutils/sqlutils",
         "//pkg/testutils/testcluster",
         "//pkg/util/leaktest",

pkg/sql/backfill/backfill_test.go

@@ -14,6 +14,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/kv"
 	"github.com/cockroachdb/cockroach/pkg/sql/execinfra"
 	"github.com/cockroachdb/cockroach/pkg/testutils/serverutils"
+	"github.com/cockroachdb/cockroach/pkg/testutils/skip"
 	"github.com/cockroachdb/cockroach/pkg/testutils/sqlutils"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
 	"github.com/cockroachdb/cockroach/pkg/util/log"
@@ -339,6 +340,8 @@ func TestVectorIndexMergingDuringBackfillWithPrefix(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
+	skip.UnderRace(t, "too slow")
+
 	// Channel to block the backfill process
 	blockBackfill := make(chan struct{})
 	backfillBlocked := make(chan struct{})