[CI] BulkByScrollUsesAllScrollDocumentsAfterConflictsIntegTests testReindex failing

[probakowski]

It works fine with 7.x

Build scan:
https://gradle-enterprise.elastic.co/s/szvepl3vj7o7y/tests/:modules:reindex:internalClusterTest/org.elasticsearch.index.reindex.BulkByScrollUsesAllScrollDocumentsAfterConflictsIntegTests/testReindex

Reproduction line:
./gradlew ':modules:reindex:internalClusterTest' --tests "org.elasticsearch.index.reindex.BulkByScrollUsesAllScrollDocumentsAfterConflictsIntegTests.testReindex" -Dtests.seed=A5D1900B8EFBFF6F -Dtests.locale=en-NZ -Dtests.timezone=America/Detroit -Druntime.java=11

Applicable branches:
master

Reproduces locally?:
Yes

Failure history:
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.index.reindex.BulkByScrollUsesAllScrollDocumentsAfterConflictsIntegTests&tests.test=testReindex

Failure excerpt:

java.lang.AssertionError: {"took":94,"errors":true,"items":[{"index":{"_index":"kxbrhijgnw","_id":"62","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":10,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"55","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":11,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"78","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":12,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"98","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":13,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"60","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":14,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"61","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":15,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"73","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":16,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"48","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":17,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"5","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":18,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"46","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":19,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"50","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":20,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"84","status":409,"error":{"type":"version_conflict_engine_exception","reason":"[84]: version conflict, document already exists (current version [1])","index_uuid":"8iU0S2gOQvaHDBVder-WVg","shard":"0","index":"kxbrhijgnw"}}},{"index":{"_index":"kxbrhijgnw","_id":"65","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":21,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"96","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":22,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"99","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":23,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"71","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":24,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"33","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":25,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"10","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":26,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"72","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":27,"_primary_term":1,"status":201}},{"index":{"_index":"kxbrhijgnw","_id":"37","_version":1,"result":"created","_shards":{"total":1,"successful":1,"failed":0},"_seq_no":28,"_primary_term":1,"status":201}}]}
Expected: is <false>
     but: was <true>

  at __randomizedtesting.SeedInfo.seed([A5D1900B8EFBFF6F:36ABCEE70CAE453D]:0)
  at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
  at org.junit.Assert.assertThat(Assert.java:956)
  at org.elasticsearch.index.reindex.BulkByScrollUsesAllScrollDocumentsAfterConflictsIntegTests.executeConcurrentUpdatesOnSubsetOfDocs(BulkByScrollUsesAllScrollDocumentsAfterConflictsIntegTests.java:244)
  at org.elasticsearch.index.reindex.BulkByScrollUsesAllScrollDocumentsAfterConflictsIntegTests.testReindex(BulkByScrollUsesAllScrollDocumentsAfterConflictsIntegTests.java:126)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:566)
  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.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:44)
  at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)
  at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.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.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.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.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
  at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.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:834)

[elasticmachine]

Pinging @elastic/es-distributed (Team:Distributed)