bbovenzi commented on code in PR #70159:
URL: https://github.com/apache/airflow/pull/70159#discussion_r3668508750


##########
airflow-core/src/airflow/ui/public/i18n/locales/en/components.json:
##########
@@ -7,9 +7,15 @@
     "backwards": "Run Backwards",
     "dateRange": "Date Range",
     "errorStartDateBeforeEndDate": "Start Date must be before the End Date",
+    "exceptionReason": {
+      "alreadyExists": "Already exists",
+      "inFlight": "In flight",
+      "unknown": "Unknown"

Review Comment:
   Should we show unknown as an error or just show whatever the raw error 
message is?



##########
airflow-core/src/airflow/ui/src/pages/Dag/Backfills/BackfillDagRunsModal.tsx:
##########
@@ -0,0 +1,192 @@
+/*!
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+import { Heading, Text } from "@chakra-ui/react";
+import type { ColumnDef } from "@tanstack/react-table";
+import { useState } from "react";
+import { useTranslation } from "react-i18next";
+
+import { useBackfillServiceListBackfillDagRuns } from "openapi/queries";
+import type { BackfillDagRunResponse, BackfillResponse } from 
"openapi/requests/types.gen";
+import { DataTable } from "src/components/DataTable";
+import type { TableState } from "src/components/DataTable/types";
+import { ErrorAlert } from "src/components/ErrorAlert";
+import { StateBadge } from "src/components/StateBadge";
+import Time from "src/components/Time";
+import { Dialog, RouterLink } from "src/components/ui";
+import { useConfig } from "src/queries/useConfig";
+import { useAutoRefresh } from "src/utils";
+
+type BackfillDagRunsModalProps = {
+  readonly backfill: BackfillResponse | undefined;
+  readonly onClose: () => void;
+  readonly open: boolean;
+};
+
+const translateExceptionReason = (reason: string, translate: (key: string) => 
string) => {
+  // Keep this mapping in sync with BackfillDagRunExceptionReason in 
airflow.models.backfill.
+  switch (reason) {
+    case "already exists":
+      return translate("components:backfill.exceptionReason.alreadyExists");
+    case "in flight":
+      return translate("components:backfill.exceptionReason.inFlight");
+    default:
+      return translate("components:backfill.exceptionReason.unknown");
+  }
+};
+
+const getColumns = (translate: (key: string) => string): 
Array<ColumnDef<BackfillDagRunResponse>> => [
+  {
+    accessorKey: "logical_date",
+    cell: ({ row }) => {
+      if (row.original.partition_key !== null && row.original.partition_key 
!== "") {
+        return <Text>{row.original.partition_key}</Text>;
+      }
+
+      if (row.original.logical_date !== null && row.original.logical_date !== 
"") {
+        return (
+          <Text>
+            <Time datetime={row.original.logical_date} />
+          </Text>
+        );
+      }
+
+      return <Text color="fg.muted">—</Text>;
+    },
+    enableSorting: false,
+    header: translate("slot"),
+  },
+  {
+    accessorKey: "dag_run_state",
+    cell: ({ row }) => {
+      const state = row.original.dag_run_state;
+
+      if (state === null || state === undefined) {
+        return <Text color="fg.muted">—</Text>;
+      }
+
+      return <StateBadge 
state={state}>{translate(`states.${state}`)}</StateBadge>;
+    },
+    enableSorting: false,
+    header: translate("dagRunState"),
+  },
+  {
+    accessorKey: "exception_reason",
+    cell: ({ row }) => {
+      const reason = row.original.exception_reason;
+
+      if (reason === null || reason === "") {
+        return <Text color="fg.muted">—</Text>;
+      }
+
+      return <Text>{translateExceptionReason(reason, translate)}</Text>;
+    },
+    enableSorting: false,
+    header: translate("components:backfill.notCreatedReason"),
+  },
+  {
+    accessorKey: "dag_run_id",
+    cell: ({ row }) => {
+      const runId = row.original.dag_run_id;
+
+      if (runId === null || runId === undefined || runId === "") {
+        return <Text color="fg.muted">—</Text>;
+      }
+
+      return (
+        <RouterLink fontWeight="bold" 
to={`/dags/${row.original.dag_id}/runs/${runId}`}>
+          {runId}
+        </RouterLink>
+      );
+    },
+    enableSorting: false,
+    header: translate("runId"),
+  },
+  {
+    accessorKey: "sort_ordinal",
+    enableSorting: false,
+    header: "#",
+  },
+];
+
+export const BackfillDagRunsModal = ({ backfill, onClose, open }: 
BackfillDagRunsModalProps) => {
+  const { t: translate } = useTranslation();
+  const pageSize = (useConfig("fallback_page_limit") as number | undefined) ?? 
100;
+  const [pageIndex, setPageIndex] = useState(0);
+  const tableState = {
+    pagination: {
+      pageIndex,
+      pageSize,
+    },
+    sorting: [],
+  } satisfies TableState;
+  const refetchInterval = useAutoRefresh({ dagId: backfill?.dag_id });
+  const shouldPoll = backfill?.completed_at === null && !backfill.is_paused;

Review Comment:
   We need to add autoRefresh to the get backfills query in `Backfills.tsx`. 
Otherwise this will never change.



##########
airflow-core/src/airflow/ui/src/pages/Dag/Backfills/Backfills.tsx:
##########
@@ -106,18 +117,18 @@ const getColumns = (translate: (key: string) => string): 
Array<ColumnDef<Backfil
 export const Backfills = () => {
   const { t: translate } = useTranslation();
   const { setTableURLState, tableURLState } = useTableURLState();
+  const [selectedBackfill, setSelectedBackfill] = useState<BackfillResponse>();

Review Comment:
   To better support this as a page. We can store this in the url params 
instead. so if you link to `/dags/{dag_id}/backfills/{backfill_id}` then the 
cover modal is already open.



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