diff --git a/cluster.go b/cluster.go
index e966c57a1..cbdb9f547 100644
--- a/cluster.go
+++ b/cluster.go
@@ -609,8 +609,8 @@ func (c *cluster) addNodeBasicSorted(node *Node) bool {
 // Nodes returns a copy of the slice of nodes in the cluster. Safe for
 // concurrent use, result may be modified.
 func (c *cluster) Nodes() []*Node {
-	c.mu.Lock()
-	defer c.mu.Unlock()
+	c.mu.RLock()
+	defer c.mu.RUnlock()
 	ret := make([]*Node, len(c.nodes))
 	copy(ret, c.nodes)
 	return ret
diff --git a/executor.go b/executor.go
index f68fec726..940120ec5 100644
--- a/executor.go
+++ b/executor.go
@@ -1138,6 +1138,14 @@ func (e *executor) executeRowsShard(_ context.Context, index string, c *pql.Call
 	if f == nil {
 		return nil, ErrFieldNotFound
 	}
+
+	// Rows query does not currently support a `time` field that has
+	// `noStandardView: true`.
+	// TODO https://github.com/pilosa/pilosa/issues/1783
+	if f.Type() == FieldTypeTime && f.options.NoStandardView {
+		return nil, errors.New("Rows() query on time field with no standard view is not currently supported")
+	}
+
 	frag := e.Holder.fragment(index, fieldName, viewStandard, shard)
 	if frag == nil {
 		return make(RowIDs, 0), nil
diff --git a/executor_test.go b/executor_test.go
index 0d42af8c5..3716e625f 100644
--- a/executor_test.go
+++ b/executor_test.go
@@ -3059,6 +3059,17 @@ func TestExecutor_Execute_Rows(t *testing.T) {
 	}
 }
 
+func TestExecutor_Execute_RowsTime(t *testing.T) {
+	c := test.MustRunCluster(t, 1)
+	defer c.Close()
+	c.CreateField(t, "i", pilosa.IndexOptions{}, "t", pilosa.OptFieldTypeTime(pilosa.TimeQuantum("YMD"), true))
+
+	exp := "executing: Rows() query on time field with no standard view is not currently supported"
+	if _, err := c[0].API.Query(context.Background(), &pilosa.QueryRequest{Index: "i", Query: `Rows(field=t)`}); err == nil || err.Error() != exp {
+		t.Fatalf("expected error: %s", exp)
+	}
+}
+
 func TestExecutor_Execute_Query_Error(t *testing.T) {
 	c := test.MustRunCluster(t, 1)
 	defer c.Close()
diff --git a/roaring/roaring.go b/roaring/roaring.go
index a2ddecb62..b3b895b38 100644
--- a/roaring/roaring.go
+++ b/roaring/roaring.go
@@ -163,9 +163,8 @@ func (b *Bitmap) Add(a ...uint64) (changed bool, err error) {
 		}
 
 		// Apply to the in-memory bitmap.
-		if op.apply(b) {
+		if b.DirectAdd(v) {
 			changed = true
-
 		}
 	}
 
diff --git a/roaring/roaring_test.go b/roaring/roaring_test.go
index 4c3d15a4d..5da9fc38c 100644
--- a/roaring/roaring_test.go
+++ b/roaring/roaring_test.go
@@ -1498,6 +1498,41 @@ func BenchmarkSliceDescending(b *testing.B) {
 		for col := uint64(pilosa.ShardWidth); col > uint64(0); col-- {
 			bm.Add(col)
 		}
+		bm.Add(0)
+	}
+}
+
+func BenchmarkSliceAscendingStriped(b *testing.B) {
+	for n := 0; n < b.N; n++ {
+		bm := roaring.NewFileBitmap()
+		l := uint64(pilosa.ShardWidth / 8)
+		for col := uint64(0); col < l; col++ {
+			bm.Add(l*0 + col)
+			bm.Add(l*1 + col)
+			bm.Add(l*2 + col)
+			bm.Add(l*3 + col)
+			bm.Add(l*4 + col)
+			bm.Add(l*5 + col)
+			bm.Add(l*6 + col)
+			bm.Add(l*7 + col)
+		}
+	}
+}
+
+func BenchmarkSliceDescendingStriped(b *testing.B) {
+	for n := 0; n < b.N; n++ {
+		bm := roaring.NewFileBitmap()
+		l := uint64(pilosa.ShardWidth / 8)
+		for col := uint64(l); col < l+1; col-- {
+			bm.Add(l*7 + col)
+			bm.Add(l*6 + col)
+			bm.Add(l*5 + col)
+			bm.Add(l*4 + col)
+			bm.Add(l*3 + col)
+			bm.Add(l*2 + col)
+			bm.Add(l*1 + col)
+			bm.Add(l*0 + col)
+		}
 	}
 }