**Build scan:**
https://gradle-enterprise.elastic.co/s/whiwuz23mtmvq/tests/:x-pack:plugin:rollup:test/org.elasticsearch.xpack.rollup.v2.RollupActionSingleNodeTests/testCannotRollupToExistingIndex

**Reproduction line:**
`./gradlew ':x-pack:plugin:rollup:test' --tests "org.elasticsearch.xpack.rollup.v2.RollupActionSingleNodeTests.testCannotRollupToExistingIndex" -Dtests.seed=9814B01249EAC77D -Dtests.locale=en-SG -Dtests.timezone=Africa/Windhoek -Druntime.java=17`

**Applicable branches:**
main

**Reproduces locally?:**
Didn't try

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.xpack.rollup.v2.RollupActionSingleNodeTests&tests.test=testCannotRollupToExistingIndex

**Failure excerpt:**
```
org.elasticsearch.index.IndexNotFoundException: no such index [rollup-testcannotrollupwhileotherrollupinprogress-svlo]

  at __randomizedtesting.SeedInfo.seed([9814B01249EAC77D:325B86553CE92325]:0)
  at org.elasticsearch.cluster.metadata.Metadata.getIndexSafe(Metadata.java:919)
  at org.elasticsearch.cluster.metadata.MetadataDeleteIndexService.deleteIndices(MetadataDeleteIndexService.java:89)
  at org.elasticsearch.cluster.metadata.MetadataDeleteIndexService$1.execute(MetadataDeleteIndexService.java:70)
  at org.elasticsearch.cluster.service.MasterService$UnbatchedExecutor.execute(MasterService.java:515)
  at org.elasticsearch.cluster.service.MasterService.innerExecuteTasks(MasterService.java:959)
  at org.elasticsearch.cluster.service.MasterService.executeTasks(MasterService.java:929)
  at org.elasticsearch.cluster.service.MasterService.runTasks(MasterService.java:261)
  at org.elasticsearch.cluster.service.MasterService$Batcher.run(MasterService.java:165)
  at org.elasticsearch.cluster.service.TaskBatcher.runIfNotProcessed(TaskBatcher.java:110)
  at org.elasticsearch.cluster.service.TaskBatcher$BatchedTask.run(TaskBatcher.java:148)
  at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:710)
  at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.runAndClean(PrioritizedEsThreadPoolExecutor.java:257)
  at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.run(PrioritizedEsThreadPoolExecutor.java:223)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
  at java.lang.Thread.run(Thread.java:833)

```
x-pack/plugin/rollup/src/test/java/org/elasticsearch/xpack/rollup/v2/RollupActionSingleNodeTests.java
ResourceAlreadyExistsException exception = expectThrows(
            ResourceAlreadyExistsException.class,
            () -> rollup(sourceIndex, rollupIndex, config)
        );
        assertThat(exception.getMessage(), containsString(rollupIndex));
    }
    public void testRollupEmptyIndex() throws IOException {
        RollupActionConfig config = new RollupActionConfig(randomInterval());
        
        prepareSourceIndex(sourceIndex);
        rollup(sourceIndex, rollupIndex, config);
        assertRollupIndex(sourceIndex, rollupIndex, config);
    }
    public void testCannotRollupIndexWithNoMetrics() {
        
        String sourceIndex = "no-metrics-idx-" + randomAlphaOfLength(5).toLowerCase(Locale.ROOT);
        client().admin()
            .indices()
            .prepareCreate(sourceIndex)
            .setSettings(
                Settings.builder()
                    .put("index.number_of_shards", numOfShards)
                    .put("index.number_of_replicas", numOfReplicas)
                    .put(IndexSettings.MODE.getKey(), IndexMode.TIME_SERIES)
                    .putList(IndexMetadata.INDEX_ROUTING_PATH.getKey(), List.of(FIELD_DIMENSION_1))
                    .put(IndexSettings.TIME_SERIES_START_TIME.getKey(), Instant.ofEpochMilli(startTime).toString())
                    .put(IndexSettings.TIME_SERIES_END_TIME.getKey(), "2106-01-08T23:40:53.384Z")
                    .build()
            )
            .setMapping(