**Build scan:**
https://gradle-enterprise.elastic.co/s/siogrpy5sezfq/tests/:server:internalClusterTest/org.elasticsearch.action.admin.cluster.node.tasks.TasksIT/testTasksUnblocking

**Reproduction line:**
```
./gradlew ':server:internalClusterTest' --tests "org.elasticsearch.action.admin.cluster.node.tasks.TasksIT.testTasksUnblocking" -Dtests.seed=BAF6DB2BC3250F42 -Dtests.locale=nl -Dtests.timezone=ROK -Druntime.java=20
```

**Applicable branches:**
main

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

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.action.admin.cluster.node.tasks.TasksIT&tests.test=testTasksUnblocking

**Failure excerpt:**
```
java.lang.AssertionError: expected:<0> but was:<1>

  at __randomizedtesting.SeedInfo.seed([BAF6DB2BC3250F42:65809B840D9732BF]:0)
  at org.junit.Assert.fail(Assert.java:88)
  at org.junit.Assert.failNotEquals(Assert.java:834)
  at org.junit.Assert.assertEquals(Assert.java:645)
  at org.junit.Assert.assertEquals(Assert.java:631)
  at org.elasticsearch.action.admin.cluster.node.tasks.TasksIT.testTasksUnblocking(TasksIT.java:548)
  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)

```
server/src/internalClusterTest/java/org/elasticsearch/action/admin/cluster/node/tasks/TasksIT.java
request.setShouldStoreResult(true);
        request.setShouldBlock(false);
        TaskId parentTaskId = new TaskId("parent_node", randomLong());
        request.setParentTask(parentTaskId);
        client().execute(TestTaskPlugin.TestTaskAction.INSTANCE, request).get();
        List<TaskInfo> events = findEvents(TestTaskPlugin.TestTaskAction.NAME, Tuple::v1);
        assertEquals(1, events.size());
        TaskInfo taskInfo = events.get(0);
        TaskId taskId = taskInfo.taskId();
        TaskResult taskResult = clusterAdmin().getTask(new GetTaskRequest().setTaskId(taskId)).get().getTask();
        assertTrue(taskResult.isCompleted());
        assertNull(taskResult.getError());
        assertEquals(taskInfo.taskId(), taskResult.getTask().taskId());
        assertEquals(taskInfo.parentTaskId(), taskResult.getTask().parentTaskId());
        assertEquals(taskInfo.type(), taskResult.getTask().type());
        assertEquals(taskInfo.action(), taskResult.getTask().action());
        assertEquals(taskInfo.description(), taskResult.getTask().description());
        assertEquals(taskInfo.startTime(), taskResult.getTask().startTime());
        assertEquals(taskInfo.headers(), taskResult.getTask().headers());
        Map<?, ?> result = taskResult.getResponseAsMap();
        assertEquals("0", result.get("failure_count").toString());
        assertNoFailures(client().admin().indices().prepareRefresh(TaskResultsService.TASK_INDEX).get());
        SearchResponse searchResponse = client().prepareSearch(TaskResultsService.TASK_INDEX)
            .setSource(SearchSourceBuilder.searchSource().query(QueryBuilders.termQuery("task.action", taskInfo.action())))
            .get();
        assertEquals(1L, searchResponse.getHits().getTotalHits().value);
        searchResponse = client().prepareSearch(TaskResultsService.TASK_INDEX)
            .setSource(SearchSourceBuilder.searchSource().query(QueryBuilders.termQuery("task.node", taskInfo.taskId().getNodeId())))
            .get();
        assertEquals(1L, searchResponse.getHits().getTotalHits().value);