test: fix TestHashKVWhenCompacting: ensure all goroutine finished and…

… decrease compact count

Signed-off-by: Benjamin Wang <[email protected]>

server/storage/mvcc/kvstore_test.go

@@ -603,10 +603,10 @@ func TestHashKVWhenCompacting(t *testing.T) {
 		}
 	}()
 
-	// Compact the store in a goroutine, using RevisionTombstone 9900 to 10000 and close donec when finished
+	// Compact the store in a goroutine, using RevisionTombstone 9950 to 10000 and close donec when finished
 	go func() {
 		defer close(donec)
-		for i := 100; i >= 0; i-- {
+		for i := 50; i >= 0; i-- {
 			_, err := s.Compact(traceutil.TODO(), int64(rev-i))
 			if err != nil {
 				t.Error(err)
@@ -620,10 +620,11 @@ func TestHashKVWhenCompacting(t *testing.T) {
 
 	select {
 	case <-donec:
-		wg.Wait()
 	case <-time.After(10 * time.Second):
 		testutil.FatalStack(t, "timeout")
 	}
+
+	wg.Wait()
 }
 
 // TestHashKVWithCompactedAndFutureRevisions ensures that HashKV returns a correct hash when called