**Build scan:**
https://gradle-enterprise.elastic.co/s/25orcgh4aq75m/tests/:x-pack:qa:rolling-upgrade:v8.2.0%23oldClusterTest/org.elasticsearch.upgrades.TransformSurvivesUpgradeIT/testTransformRollingUpgrade

**Reproduction line:**
`./gradlew ':x-pack:qa:rolling-upgrade:v8.2.0#oldClusterTest' -Dtests.class="org.elasticsearch.upgrades.TransformSurvivesUpgradeIT" -Dtests.method="testTransformRollingUpgrade" -Dtests.seed=1A9920CB87B03F50 -Dtests.bwc=true -Dtests.locale=ru-RU -Dtests.timezone=America/Louisville -Druntime.java=17`

**Applicable branches:**
master

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

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.upgrades.TransformSurvivesUpgradeIT&tests.test=testTransformRollingUpgrade

**Failure excerpt:**
```
java.lang.AssertionError: 
Expected: <330L>
     but: was <5L>

  at __randomizedtesting.SeedInfo.seed([1A9920CB87B03F50:B5E415722CF6EC94]: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.upgrades.TransformSurvivesUpgradeIT.lambda$createAndStartContinuousTransform$4(TransformSurvivesUpgradeIT.java:134)
  at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:1068)
  at org.elasticsearch.upgrades.TransformSurvivesUpgradeIT.createAndStartContinuousTransform(TransformSurvivesUpgradeIT.java:132)
  at org.elasticsearch.upgrades.TransformSurvivesUpgradeIT.testTransformRollingUpgrade(TransformSurvivesUpgradeIT.java:90)
  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/qa/rolling-upgrade/src/test/java/org/elasticsearch/upgrades/TransformSurvivesUpgradeIT.java
)).get(0);
            assertThat(
                (Integer) indexerStats.get("documents_indexed"),
                greaterThan((Integer) XContentMapValues.extractValue("stats.documents_indexed", previousStateAndStats))
            );
            assertThat(
                (Integer) indexerStats.get("documents_processed"),
                greaterThan((Integer) XContentMapValues.extractValue("stats.documents_processed", previousStateAndStats))
            );
        });
    }
    private void verifyUpgradeFailsIfMixedCluster() {
        
        if (UPGRADE_FROM_VERSION.equals(Version.CURRENT)) {
            return;
        }
        final Request upgradeTransformRequest = new Request("POST", getTransformEndpoint() + "_upgrade");
        Exception ex = expectThrows(Exception.class, () -> client().performRequest(upgradeTransformRequest));
        assertThat(ex.getMessage(), containsString("All nodes must be the same version"));
    }
    private void verifyUpgrade() throws IOException {
        final Request upgradeTransformRequest = new Request("POST", getTransformEndpoint() + "_upgrade");
        Response response = client().performRequest(upgradeTransformRequest);
        assertEquals(200, response.getStatusLine().getStatusCode());
    }
    private void awaitWrittenIndexerState(String id, Consumer<Map<?, ?>> responseAssertion) throws Exception {
        Request getStatsDocsRequest = new Request(
            "GET",
            TRANSFORM_INTERNAL_INDEX_PREFIX + "*," + TRANSFORM_INTERNAL_INDEX_PREFIX_DEPRECATED + "*" + "/_search"
        );