fix(plugin-chart-country-map): admin_level string/number coercion + lower row_limit default

Two user-visible bugs fixed:

1. **"No GeoJSON URL resolved" with admin_level + country set.** The
   SelectControl serializes admin_level as a string ('0' / '1' /
   'aggregated'), but transformProps was comparing against numbers
   (`adminLevel === 1`), so real-world charts silently fell through
   every branch and returned a null URL. Existing tests passed because
   they used number values directly. Normalize to string at the top
   of transformProps and compare against string constants; add two
   regression tests that pass the string form-data values reality
   actually sends.

2. **Default row_limit of 50000 exceeds many deployments' configured
   ROW_LIMIT ceiling, blocking Update Chart.** Choropleths key one row
   per region — even the densest country maps (France 101 departments,
   India 36 states, US 51 territories) are well under 10k rows.
   Override the shared default to 10000 via controlOverrides.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: Superset Dev

superset-frontend/plugins/plugin-chart-country-map/src/plugin/controlPanel.tsx

@@ -574,6 +574,14 @@ const config: ControlPanelConfig = {
     linear_color_scheme: {
       renderTrigger: true,
     },
+    // Choropleths key one row per region — even the densest country maps
+    // (e.g. France 101 departments, India 36 states, US 51 territories)
+    // are well under 10k rows. The shared row_limit default of 50k is
+    // both wasteful and exceeds many deployments' configured ROW_LIMIT
+    // ceiling, blocking Update Chart with no visible explanation.
+    row_limit: {
+      default: 10000,
+    },
   },
   // formDataOverrides runs when the user switches a chart's viz_type to
   // this plugin. We use it for two jobs:

superset-frontend/plugins/plugin-chart-country-map/src/plugin/transformProps.ts

@@ -53,16 +53,21 @@ export default function transformProps(
   const data = (queriesData?.[0]?.data as Record<string, unknown>[]) ?? [];
 
   const worldview = formData.worldview || 'ukr';
-  const adminLevel = formData.admin_level ?? 0;
+  // SelectControl serializes the admin_level value as a string ('0' /
+  // '1' / 'aggregated'), but the form_data type allows number 0/1 too
+  // (legacy migration, jest tests). Normalize to a string before any
+  // comparison so we don't silently fall through every branch and
+  // return a null URL.
+  const adminLevel = String(formData.admin_level ?? '0');
 
   let geoJsonUrl: string | null = null;
   if (formData.composite) {
     geoJsonUrl = `${GEOJSON_BASE}/composite_${formData.composite}_${SHARED_ADMIN1_WORLDVIEW}.geo.json`;
   } else if (formData.region_set && formData.country) {
     geoJsonUrl = `${GEOJSON_BASE}/regional_${formData.country}_${formData.region_set}_${SHARED_ADMIN1_WORLDVIEW}.geo.json`;
-  } else if (adminLevel === 1 && formData.country) {
+  } else if (adminLevel === '1' && formData.country) {
     geoJsonUrl = `${GEOJSON_BASE}/${SHARED_ADMIN1_WORLDVIEW}_admin1_${formData.country}.geo.json`;
-  } else if (adminLevel === 0) {
+  } else if (adminLevel === '0') {
     geoJsonUrl = `${GEOJSON_BASE}/${worldview}_admin0.geo.json`;
   }
 

superset-frontend/plugins/plugin-chart-country-map/test/plugin/transformProps.test.ts

@@ -63,6 +63,33 @@ test('Admin 1 stays on the shared (ukr) file regardless of worldview', () => {
   );
 });
 
+// Regression: SelectControl serializes admin_level as a string '1', but
+// the form_data type also allows the number 1 (legacy migration, jest
+// cases). Both must resolve to the same Admin 1 URL — previously the
+// number-only check meant real-world string values silently fell
+// through every branch and the chart rendered "No GeoJSON URL resolved".
+test('Admin 1 with string admin_level resolves the URL too', () => {
+  const out = transformProps(
+    buildChartProps({
+      admin_level: '1' as unknown as 1,
+      country: 'FRA',
+      worldview: 'ukr',
+    }),
+  );
+  expect(out.geoJsonUrl).toBe(
+    '/static/assets/country-maps/ukr_admin1_FRA.geo.json',
+  );
+});
+
+test('Admin 0 with string admin_level resolves the URL too', () => {
+  const out = transformProps(
+    buildChartProps({ admin_level: '0' as unknown as 0, worldview: 'ukr' }),
+  );
+  expect(out.geoJsonUrl).toBe(
+    '/static/assets/country-maps/ukr_admin0.geo.json',
+  );
+});
+
 test('Region set + country → regional aggregation URL (shared)', () => {
   const out = transformProps(
     buildChartProps({