**Build scan:**
https://gradle-enterprise.elastic.co/s/j2ejoyp6jzmis/tests/:x-pack:plugin:ml:internalClusterTest/org.elasticsearch.xpack.ml.integration.DatafeedCcsIT/testDatafeedWithCcsRemoteHealthy

**Reproduction line:**
`./gradlew ':x-pack:plugin:ml:internalClusterTest' --tests "org.elasticsearch.xpack.ml.integration.DatafeedCcsIT.testDatafeedWithCcsRemoteHealthy" -Dtests.seed=2B74FA46CB2D4E50 -Dtests.locale=zh-SG -Dtests.timezone=Etc/GMT-12 -Druntime.java=17`

**Applicable branches:**
master

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

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.xpack.ml.integration.DatafeedCcsIT&tests.test=testDatafeedWithCcsRemoteHealthy

**Failure excerpt:**
```
java.lang.AssertionError: 
Expected: is <closed>
     but: was <opened>

  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.xpack.ml.integration.DatafeedCcsIT.lambda$testDatafeedWithCcsRemoteHealthy$0(DatafeedCcsIT.java:114)
  at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:1068)
  at org.elasticsearch.xpack.ml.integration.DatafeedCcsIT.testDatafeedWithCcsRemoteHealthy(DatafeedCcsIT.java:112)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
  at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:568)
  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:44)
  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:375)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:824)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:475)
  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:375)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:831)
  at java.lang.Thread.run(Thread.java:833)

```
x-pack/plugin/ml/src/internalClusterTest/java/org/elasticsearch/xpack/ml/integration/DatafeedCcsIT.java
SearchResponse response = client(LOCAL_CLUSTER).prepareSearch(".ml-notifications*")
                .setQuery(new MatchPhraseQueryBuilder("message", message))
                .execute()
                .actionGet();
            return response.getHits().getTotalHits().value > 0;
        } catch (ElasticsearchException e) {
            return false;
        }
    }
    private JobStats getJobStats(String jobId) {
        return client(LOCAL_CLUSTER).execute(GetJobsStatsAction.INSTANCE, new GetJobsStatsAction.Request(jobId))
            .actionGet()
            .getResponse()
            .results()
            .get(0);
    }
    /**
     * Create and start a job and datafeed on the local cluster but searching for data in the remote cluster.
     */
    private void setupJobAndDatafeed(String jobId, String datafeedId, Long endTimeMs) throws Exception {
        Job.Builder job = BaseMlIntegTestCase.createScheduledJob(jobId, ByteSizeValue.ofMb(20));
        client(LOCAL_CLUSTER).execute(PutJobAction.INSTANCE, new PutJobAction.Request(job)).actionGet();
        
        DatafeedConfig.Builder config = BaseMlIntegTestCase.createDatafeedBuilder(
            datafeedId,
            job.getId(),
            List.of(REMOTE_CLUSTER + ":" + DATA_INDEX)
        );