**Build scan:**
https://gradle-enterprise.elastic.co/s/2p5qyrcuzi35i/tests/:modules:data-streams:internalClusterTest/org.elasticsearch.datastreams.lifecycle.DataLifecycleServiceIT/testDataLifecycleServiceConfiguresTheMergePolicy

**Reproduction line:**
```
gradlew ':modules:data-streams:internalClusterTest' --tests "org.elasticsearch.datastreams.lifecycle.DataLifecycleServiceIT.testDataLifecycleServiceConfiguresTheMergePolicy" -Dtests.seed=E37829DCD2B52CAC -Dtests.locale=sr-Latn-ME -Dtests.timezone=Australia/Adelaide -Druntime.java=20
```

**Applicable branches:**
main

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

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.datastreams.lifecycle.DataLifecycleServiceIT&tests.test=testDataLifecycleServiceConfiguresTheMergePolicy

**Failure excerpt:**
```
java.lang.AssertionError: 
Expected: is "5"
     but: was "16"

  at __randomizedtesting.SeedInfo.seed([E37829DCD2B52CAC:78854EF4EC3C97D0]:0)
  at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
  at org.junit.Assert.assertThat(Assert.java:956)
  at org.junit.Assert.assertThat(Assert.java:923)
  at org.elasticsearch.datastreams.lifecycle.DataLifecycleServiceIT.lambda$testDataLifecycleServiceConfiguresTheMergePolicy$16(DataLifecycleServiceIT.java:628)
  at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:1172)
  at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:1145)
  at org.elasticsearch.datastreams.lifecycle.DataLifecycleServiceIT.testDataLifecycleServiceConfiguresTheMergePolicy(DataLifecycleServiceIT.java:625)
  at jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
  at java.lang.reflect.Method.invoke(Method.java:578)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1758)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:946)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:982)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:996)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:48)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:843)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:490)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:955)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:840)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:891)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:902)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:38)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:47)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:850)
  at java.lang.Thread.run(Thread.java:1623)

```
modules/data-streams/src/internalClusterTest/java/org/elasticsearch/datastreams/lifecycle/DataStreamLifecycleServiceIT.java
}
    @Override
    protected Settings nodeSettings(int nodeOrdinal, Settings otherSettings) {
        Settings.Builder settings = Settings.builder().put(super.nodeSettings(nodeOrdinal, otherSettings));
        settings.put(DataStreamLifecycleService.DATA_STREAM_LIFECYCLE_POLL_INTERVAL, "1s");
        settings.put(DataStreamLifecycle.CLUSTER_LIFECYCLE_DEFAULT_ROLLOVER_SETTING.getKey(), "min_docs=1,max_docs=1");
        return settings.build();
    }
    @After
    public void cleanup() {
        
        updateClusterSettings(Settings.builder().putNull("*"));
    }
    public void testRolloverLifecycle() throws Exception {
        
        DataStreamLifecycle lifecycle = new DataStreamLifecycle();
        putComposableIndexTemplate("id1", null, List.of("metrics-foo*"), null, null, lifecycle);
        String dataStreamName = "metrics-foo";
        CreateDataStreamAction.Request createDataStreamRequest = new CreateDataStreamAction.Request(dataStreamName);
        client().execute(CreateDataStreamAction.INSTANCE, createDataStreamRequest).get();
        indexDocs(dataStreamName, 1);
        assertBusy(() -> {
            GetDataStreamAction.Request getDataStreamRequest = new GetDataStreamAction.Request(new String[] { dataStreamName });
            GetDataStreamAction.Response getDataStreamResponse = client().execute(GetDataStreamAction.INSTANCE, getDataStreamRequest)
                .actionGet();
            assertThat(getDataStreamResponse.getDataStreams().size(), equalTo(1));
            assertThat(getDataStreamResponse.getDataStreams().get(0).getDataStream().getName(), equalTo(dataStreamName));
            List<Index> backingIndices = getDataStreamResponse.getDataStreams().get(0).getDataStream().getIndices();
            assertThat(backingIndices.size(), equalTo(2));
            String backingIndex = backingIndices.get(0).getName();