[ML] Display warning if clone job fails due to missing data view

x-pack/plugins/ml/public/application/jobs/jobs_list/components/utils.js

@@ -220,9 +220,21 @@ export async function cloneJob(jobId) {
     ]);
 
     const dataViewNames = await getDataViewNames();
-    const jobIndicesAvailable = dataViewNames.includes(datafeed.indices.join(','));
+    const dataViewTitle = datafeed.indices.join(',');
+    const jobIndicesAvailable = dataViewNames.includes(dataViewTitle);
 
     if (jobIndicesAvailable === false) {
+      const warningText = i18n.translate(
+        'xpack.ml.jobsList.managementActions.noSourceDataViewForClone',
+        {
+          defaultMessage:
+            'Unable to clone the anomaly detection job {jobId}. No data view exists for index {dataViewTitle}.',
+          values: { jobId, dataViewTitle },
+        }
+      );
+      getToastNotificationService().displayDangerToast(warningText, {
+        'data-test-subj': 'mlCloneJobNoDataViewExistsWarningToast',
+      });
       return;
     }
 

x-pack/test/functional/apps/ml/anomaly_detection/single_metric_job.ts

@@ -10,6 +10,7 @@ import { FtrProviderContext } from '../../../ftr_provider_context';
 export default function ({ getService }: FtrProviderContext) {
   const esArchiver = getService('esArchiver');
   const ml = getService('ml');
+  const browser = getService('browser');
 
   const jobId = `fq_single_1_${Date.now()}`;
   const jobIdClone = `${jobId}_clone`;
@@ -201,7 +202,26 @@ export default function ({ getService }: FtrProviderContext) {
       await ml.api.assertDetectorResultsExist(jobId, 0);
     });
 
+    it('job cloning fails in the single metric wizard if a matching data view does not exist', async () => {
+      await ml.testExecution.logTestStep('delete data view used by job');
+      await ml.testResources.deleteIndexPatternByTitle('ft_farequote');
+
+      // Refresh page to ensure page has correct cache of data views
+      await browser.refresh();
+
+      await ml.testExecution.logTestStep(
+        'job cloning clicks the clone action and displays an error toast'
+      );
+      await ml.jobTable.clickCloneJobActionWhenNoDataViewExists(jobId);
+    });
+
     it('job cloning opens the existing job in the single metric wizard', async () => {
+      await ml.testExecution.logTestStep('recreate data view used by job');
+      await ml.testResources.createIndexPatternIfNeeded('ft_farequote', '@timestamp');
+
+      // Refresh page to ensure page has correct cache of data views
+      await browser.refresh();
+
       await ml.testExecution.logTestStep(
         'job cloning clicks the clone action and loads the single metric wizard'
       );

x-pack/test/functional/services/ml/job_table.ts

@@ -373,6 +373,16 @@ export function MachineLearningJobTableProvider(
       await testSubjects.existOrFail('~mlPageJobWizard');
     }
 
+    public async clickCloneJobActionWhenNoDataViewExists(jobId: string) {
+      await this.ensureJobActionsMenuOpen(jobId);
+      await testSubjects.click('mlActionButtonCloneJob');
+      await this.assertNoDataViewForCloneJobWarningToastExist();
+    }
+
+    public async assertNoDataViewForCloneJobWarningToastExist() {
+      await testSubjects.existOrFail('mlCloneJobNoDataViewExistsWarningToast', { timeout: 5000 });
+    }
+
     public async clickEditJobAction(jobId: string) {
       await this.ensureJobActionsMenuOpen(jobId);
       await testSubjects.click('mlActionButtonEditJob');