[CI] [ML] BasicDistributedJobsIT.testDedicatedMlNode fails

[elasticmachine]

Original comment by @DaveCTurner:

LINK REDACTED failed with:

java.lang.AssertionError: expected index shard counter on shard [.ml-notifications][0] on node node_t1 to be 0 but was 1. Current replication tasks on node:
{
  "tasks" : { }
}
	at __randomizedtesting.SeedInfo.seed([6DB5A4736EF74FC3:D496BD0C4F77CB1C]:0)
	at org.elasticsearch.test.InternalTestCluster.lambda$assertShardIndexCounter$5(InternalTestCluster.java:1159)
	at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:731)
	at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:705)
	at org.elasticsearch.test.InternalTestCluster.assertShardIndexCounter(InternalTestCluster.java:1140)
	at org.elasticsearch.test.InternalTestCluster.beforeIndexDeletion(InternalTestCluster.java:1109)
	at org.elasticsearch.test.ESIntegTestCase.beforeIndexDeletion(ESIntegTestCase.java:607)
	at org.elasticsearch.test.ESIntegTestCase.afterInternal(ESIntegTestCase.java:577)
	at org.elasticsearch.test.ESIntegTestCase.cleanUpCluster(ESIntegTestCase.java:2085)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...

The following did not reproduce the problem for me:

REPRODUCE WITH: ./gradlew :x-pack-elasticsearch:plugin:ml:internalClusterTest \
  -Dtests.seed=6DB5A4736EF74FC3 \
  -Dtests.class=org.elasticsearch.xpack.ml.integration.BasicDistributedJobsIT \
  -Dtests.method="testDedicatedMlNode" \
  -Dtests.security.manager=true \
  -Dtests.locale=vi-VN \
  -Dtests.timezone=Africa/Bissau

[rjernst]

This doesn't reproduce and there is not enough information to debug here, so I am closing.