Description
https://elasticsearch-ci.elastic.co/job/elastic+elasticsearch+master+periodic/379/
Does not reproduce
./gradlew :server:integTest -Dtests.seed=F9699D9733C3983F \
-Dtests.class=org.elasticsearch.indices.state.RareClusterStateIT \
-Dtests.method="testDelayedMappingPropagationOnReplica" \
-Dtests.security.manager=true -Dtests.locale=ar-TN -Dtests.timezone=Asia/Yakutsk \
-Dcompiler.java=11 -Druntime.java=8
02:01:35 1> [2018-12-19T11:01:22,864][INFO ][o.e.i.s.RareClusterStateIT] [testDelayedMappingPropagationOnReplica] [RareClusterStateIT#testDelayedMappingPropagationOnReplica]: cleaned up after test
02:01:35 1> [2018-12-19T11:01:22,864][INFO ][o.e.i.s.RareClusterStateIT] [testDelayedMappingPropagationOnReplica] after test
02:01:35 FAILURE 29.9s J4 | RareClusterStateIT.testDelayedMappingPropagationOnReplica <<< FAILURES!
02:01:35 > Throwable #1: java.lang.AssertionError:
02:01:35 > Expected: an instance of org.elasticsearch.action.index.IndexResponse
02:01:35 > but: null
02:01:35 > at __randomizedtesting.SeedInfo.seed([F9699D9733C3983F:85175C586324A3DC]:0)
02:01:35 > at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
02:01:35 > at org.elasticsearch.indices.state.RareClusterStateIT.lambda$testDelayedMappingPropagationOnReplica$5(RareClusterStateIT.java:413)
02:01:35 > at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:847)
02:01:35 > at org.elasticsearch.test.ESTestCase.assertBusy(ESTestCase.java:821)
02:01:35 > at org.elasticsearch.indices.state.RareClusterStateIT.testDelayedMappingPropagationOnReplica(RareClusterStateIT.java:409)
02:01:35 > at java.lang.Thread.run(Thread.java:748)
02:01:35 > Suppressed: java.lang.AssertionError:
02:01:35 > Expected: an instance of org.elasticsearch.action.support.master.AcknowledgedResponse
02:01:35 > but: null
Previous email threads suggest there's a connection to #33673