Use explicit GraphLayout plugin naming.

distributed/dashboard/components/scheduler.py

@@ -1938,6 +1938,8 @@ class TaskGraph(DashboardComponent):
     def __init__(self, scheduler, **kwargs):
         self.scheduler = scheduler
         self.layout = GraphLayout(scheduler)
+        if "graph_layout_name" in kwargs:
+            self.layout.name = kwargs.pop("graph_layout_name")
         scheduler.add_plugin(self.layout)
         self.invisible_count = 0  # number of invisible nodes
 
@@ -3400,7 +3402,11 @@ def tasks_doc(scheduler, extra, doc):
 
 def graph_doc(scheduler, extra, doc):
     with log_errors():
-        graph = TaskGraph(scheduler, sizing_mode="stretch_both")
+        graph = TaskGraph(
+            scheduler,
+            sizing_mode="stretch_both",
+            graph_layout_name="graph-doc-graph-layout",
+        )
         doc.title = "Dask: Task Graph"
         graph.update()
         add_periodic_callback(doc, graph, 200)

distributed/dashboard/scheduler.py

@@ -58,7 +58,9 @@
         TaskStream, 100, n_rectangles=1000, clear_interval="10s"
     ),
     "/individual-progress": individual_doc(TaskProgress, 100, height=160),
-    "/individual-graph": individual_doc(TaskGraph, 200),
+    "/individual-graph": individual_doc(
+        TaskGraph, 200, graph_layout_name="indiv-graph-layout"
+    ),
     "/individual-groups": individual_doc(TaskGroupGraph, 200),
     "/individual-group-progress": individual_doc(TaskGroupProgress, 200),
     "/individual-workers-memory": individual_doc(WorkersMemory, 100),

distributed/diagnostics/graph_layout.py

@@ -1,5 +1,3 @@
-import uuid
-
 from .plugin import SchedulerPlugin
 
 
@@ -14,7 +12,7 @@ class GraphLayout(SchedulerPlugin):
     """
 
     def __init__(self, scheduler):
-        self.name = f"graph-layout-{uuid.uuid4()}"
+        self.name = "graph-layout"
         self.x = {}
         self.y = {}
         self.collision = {}