bbovenzi commented on code in PR #61058:
URL: https://github.com/apache/airflow/pull/61058#discussion_r2743077515


##########
airflow-core/src/airflow/ui/src/queries/useClearTaskInstances.ts:
##########


Review Comment:
   We should do the same for `useClearRun`



##########
airflow-core/src/airflow/ui/src/layouts/Details/Gantt/utils.ts:
##########
@@ -50,13 +59,90 @@ type ChartOptionsParams = {
   handleBarHover: (event: ChartEvent, elements: Array<ActiveElement>) => void;
   hoveredId?: string | null;
   hoveredItemColor?: string;
+  labels: Array<string>;
   selectedId?: string;
   selectedItemColor?: string;
   selectedRun?: GridRunsResponse;
   selectedTimezone: string;
   translate: TFunction;
 };
 
+type TransformGanttDataParams = {
+  allTries: Array<GanttTaskInstance>;
+  currentTime: string;
+  flatNodes: Array<GridTask>;
+  gridSummaries: Array<LightGridTaskInstanceSummary>;
+  selectedTimezone: string;
+};
+
+export const transformGanttData = ({
+  allTries,
+  currentTime,
+  flatNodes,
+  gridSummaries,
+  selectedTimezone,
+}: TransformGanttDataParams): Array<GanttDataItem> => {
+  // Group tries by task_id
+  const triesByTask = new Map<string, Array<GanttTaskInstance>>();
+
+  for (const ti of allTries) {
+    const existing = triesByTask.get(ti.task_id) ?? [];
+
+    existing.push(ti);
+    triesByTask.set(ti.task_id, existing);
+  }
+
+  return flatNodes
+    .flatMap((node): Array<GanttDataItem> | undefined => {
+      const gridSummary = gridSummaries.find((ti) => ti.task_id === node.id);
+
+      // Handle groups and mapped tasks using grid summary (aggregated min/max 
times)
+      if ((node.isGroup ?? node.is_mapped) && gridSummary) {
+        return [
+          {
+            isGroup: node.isGroup,
+            isMapped: node.is_mapped,
+            state: gridSummary.state,
+            taskId: gridSummary.task_id,
+            x: [
+              formatDate(gridSummary.min_start_date, selectedTimezone, 
DEFAULT_DATETIME_FORMAT_WITH_TZ),
+              formatDate(gridSummary.max_end_date, selectedTimezone, 
DEFAULT_DATETIME_FORMAT_WITH_TZ),
+            ],
+            y: gridSummary.task_id,
+          },
+        ];
+      }
+
+      // Handle individual tasks with all their tries
+      if (!node.isGroup) {
+        const tries = triesByTask.get(node.id);
+
+        if (tries && tries.length > 0) {
+          return tries.map((tryInstance) => {
+            const hasTaskRunning = isStatePending(tryInstance.state);
+            const endTime = hasTaskRunning ? currentTime : 
tryInstance.end_date;
+
+            return {
+              isGroup: false,
+              isMapped: tryInstance.is_mapped,
+              state: tryInstance.state,
+              taskId: tryInstance.task_id,
+              tryNumber: tryInstance.try_number,
+              x: [
+                formatDate(tryInstance.start_date, selectedTimezone, 
DEFAULT_DATETIME_FORMAT_WITH_TZ),
+                formatDate(endTime, selectedTimezone, 
DEFAULT_DATETIME_FORMAT_WITH_TZ),
+              ],
+              y: tryInstance.task_id,
+            };
+          });
+        }
+      }
+
+      return undefined;
+    })
+    .filter((item): item is GanttDataItem => item !== undefined);
+};
+
 export const createHandleBarClick =

Review Comment:
   Let's include try_number in handleBarClick so that clicking on a try that 
isn't the latest will update the search params like `?try_number=2`



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