[CI] MixedClusterClientYamlTestSuiteIT test {p0=cluster.stats/10_basic/cluster stats test} failing

[jkakavas]

This looks suspiciously like #54415 , MixedCluster tests where stats API returns 400 with that exception, in Debian.

I'm not muting this for now as this has not been failing

Build scan:
https://gradle-enterprise.elastic.co/s/chtrpx3vrvegu/tests/:qa:mixed-cluster:v6.8.19%23mixedClusterTest/org.elasticsearch.backwards.MixedClusterClientYamlTestSuiteIT/test%20%7Bp0=cluster.stats%2F10_basic%2Fcluster%20stats%20test%7D

Reproduction line:
./gradlew ':qa:mixed-cluster:v6.8.19#mixedClusterTest' -Dtests.class="org.elasticsearch.backwards.MixedClusterClientYamlTestSuiteIT" -Dtests.method="test {p0=cluster.stats/10_basic/cluster stats test}" -Dtests.seed=5F8464A5312972D3 -Dtests.bwc=true -Dtests.locale=und -Dtests.timezone=Brazil/West -Druntime.java=8

Applicable branches:
7.x

Reproduces locally?:
Didn't try

Failure history:
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.backwards.MixedClusterClientYamlTestSuiteIT&tests.test=test%20%7Bp0%3Dcluster.stats/10_basic/cluster%20stats%20test%7D

Failure excerpt:

java.lang.AssertionError: Failure at [cluster.stats/10_basic:3]: expected [2xx] status code but api [cluster.stats] returned [400 Bad Request] [{"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"Values less than -1 bytes are not supported: -5884395520b","stack_trace":"[Values less than -1 bytes are not supported: -5884395520b]; nested: IllegalArgumentException[Values less than -1 bytes are not supported: -5884395520b];\n\tat org.elasticsearch.ElasticsearchException.guessRootCauses(ElasticsearchException.java:633)\n\tat org.elasticsearch.ElasticsearchException.generateFailureXContent(ElasticsearchException.java:561)\n\tat org.elasticsearch.rest.BytesRestResponse.build(BytesRestResponse.java:138)\n\tat org.elasticsearch.rest.BytesRestResponse.<init>(BytesRestResponse.java:99)\n\tat org.elasticsearch.rest.BytesRestResponse.<init>(BytesRestResponse.java:82)\n\tat org.elasticsearch.rest.action.RestActionListener.onFailure(RestActionListener.java:55)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:40)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:87)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:81)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:83)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:77)\n\tat org.elasticsearch.action.ActionListener.completeWith(ActionListener.java:445)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$1(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$2(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:53)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction.newResponse(TransportNodesAction.java:133)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction$AsyncAction.lambda$finishHim$0(TransportNodesAction.java:267)\n\tat org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:673)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\nCaused by: java.lang.IllegalArgumentException: Values less than -1 bytes are not supported: -5884395520b\n\tat org.elasticsearch.common.unit.ByteSizeValue.<init>(ByteSizeValue.java:93)\n\tat org.elasticsearch.common.unit.ByteSizeValue.<init>(ByteSizeValue.java:88)\n\tat org.elasticsearch.monitor.os.OsStats$Mem.getUsed(OsStats.java:297)\n\tat org.elasticsearch.monitor.os.OsStats$Mem.toXContent(OsStats.java:317)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsNodes$OsStats.toXContent(ClusterStatsNodes.java:351)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsNodes.toXContent(ClusterStatsNodes.java:150)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsResponse.toXContent(ClusterStatsResponse.java:141)\n\tat org.elasticsearch.rest.action.RestActions.nodesResponse(RestActions.java:173)\n\tat org.elasticsearch.rest.action.RestActions$NodesResponseRestListener.buildResponse(RestActions.java:226)\n\tat org.elasticsearch.rest.action.RestActions$NodesResponseRestListener.buildResponse(RestActions.java:217)\n\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:27)\n\tat org.elasticsearch.rest.action.RestResponseListener.processResponse(RestResponseListener.java:26)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:38)\n\t... 27 more\n\tSuppressed: java.lang.IllegalStateException: Failed to close the XContentBuilder\n\t\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1038)\n\t\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:26)\n\t\t... 29 more\n\tCaused by: java.io.IOException: Unclosed object or array found\n\t\tat org.elasticsearch.common.xcontent.json.JsonXContentGenerator.close(JsonXContentGenerator.java:455)\n\t\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1036)\n\t\t... 30 more\n"}],"type":"illegal_argument_exception","reason":"Values less than -1 bytes are not supported: -5884395520b","stack_trace":"java.lang.IllegalArgumentException: Values less than -1 bytes are not supported: -5884395520b\n\tat org.elasticsearch.common.unit.ByteSizeValue.<init>(ByteSizeValue.java:93)\n\tat org.elasticsearch.common.unit.ByteSizeValue.<init>(ByteSizeValue.java:88)\n\tat org.elasticsearch.monitor.os.OsStats$Mem.getUsed(OsStats.java:297)\n\tat org.elasticsearch.monitor.os.OsStats$Mem.toXContent(OsStats.java:317)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsNodes$OsStats.toXContent(ClusterStatsNodes.java:351)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsNodes.toXContent(ClusterStatsNodes.java:150)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsResponse.toXContent(ClusterStatsResponse.java:141)\n\tat org.elasticsearch.rest.action.RestActions.nodesResponse(RestActions.java:173)\n\tat org.elasticsearch.rest.action.RestActions$NodesResponseRestListener.buildResponse(RestActions.java:226)\n\tat org.elasticsearch.rest.action.RestActions$NodesResponseRestListener.buildResponse(RestActions.java:217)\n\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:27)\n\tat org.elasticsearch.rest.action.RestResponseListener.processResponse(RestResponseListener.java:26)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:38)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:87)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:81)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:83)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:77)\n\tat org.elasticsearch.action.ActionListener.completeWith(ActionListener.java:445)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$1(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$2(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:53)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction.newResponse(TransportNodesAction.java:133)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction$AsyncAction.lambda$finishHim$0(TransportNodesAction.java:267)\n\tat org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:673)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\n\tSuppressed: java.lang.IllegalStateException: Failed to close the XContentBuilder\n\t\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1038)\n\t\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:26)\n\t\t... 29 more\n\tCaused by: java.io.IOException: Unclosed object or array found\n\t\tat org.elasticsearch.common.xcontent.json.JsonXContentGenerator.close(JsonXContentGenerator.java:455)\n\t\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1036)\n\t\t... 30 more\n","suppressed":[{"type":"illegal_state_exception","reason":"Failed to close the XContentBuilder","caused_by":{"type":"i_o_exception","reason":"Unclosed object or array found","stack_trace":"java.io.IOException: Unclosed object or array found\n\tat org.elasticsearch.common.xcontent.json.JsonXContentGenerator.close(JsonXContentGenerator.java:455)\n\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1036)\n\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:26)\n\tat org.elasticsearch.rest.action.RestResponseListener.processResponse(RestResponseListener.java:26)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:38)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:87)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:81)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:83)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:77)\n\tat org.elasticsearch.action.ActionListener.completeWith(ActionListener.java:445)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$1(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$2(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:53)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction.newResponse(TransportNodesAction.java:133)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction$AsyncAction.lambda$finishHim$0(TransportNodesAction.java:267)\n\tat org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:673)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\n"},"stack_trace":"java.lang.IllegalStateException: Failed to close the XContentBuilder\n\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1038)\n\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:26)\n\tat org.elasticsearch.rest.action.RestResponseListener.processResponse(RestResponseListener.java:26)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:38)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:87)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:81)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:83)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:77)\n\tat org.elasticsearch.action.ActionListener.completeWith(ActionListener.java:445)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$1(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$2(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:53)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction.newResponse(TransportNodesAction.java:133)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction$AsyncAction.lambda$finishHim$0(TransportNodesAction.java:267)\n\tat org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:673)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\nCaused by: java.io.IOException: Unclosed object or array found\n\tat org.elasticsearch.common.xcontent.json.JsonXContentGenerator.close(JsonXContentGenerator.java:455)\n\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1036)\n\t... 30 more\n"}]},"status":400}]

  at __randomizedtesting.SeedInfo.seed([5F8464A5312972D3:D7D05B7F9FD51F2B]:0)
  at org.elasticsearch.test.rest.yaml.ESClientYamlSuiteTestCase.executeSection(ESClientYamlSuiteTestCase.java:462)
  at org.elasticsearch.test.rest.yaml.ESClientYamlSuiteTestCase.test(ESClientYamlSuiteTestCase.java:439)
  at sun.reflect.GeneratedMethodAccessor21.invoke(null:-1)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1750)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:938)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:974)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:988)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
  at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
  at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
  at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
  at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:947)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:832)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:883)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:894)
  at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
  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 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.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
  at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
  at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
  at java.lang.Thread.run(Thread.java:748)

  Caused by: java.lang.AssertionError: expected [2xx] status code but api [cluster.stats] returned [400 Bad Request] [{"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"Values less than -1 bytes are not supported: -5884395520b","stack_trace":"[Values less than -1 bytes are not supported: -5884395520b]; nested: IllegalArgumentException[Values less than -1 bytes are not supported: -5884395520b];\n\tat org.elasticsearch.ElasticsearchException.guessRootCauses(ElasticsearchException.java:633)\n\tat org.elasticsearch.ElasticsearchException.generateFailureXContent(ElasticsearchException.java:561)\n\tat org.elasticsearch.rest.BytesRestResponse.build(BytesRestResponse.java:138)\n\tat org.elasticsearch.rest.BytesRestResponse.<init>(BytesRestResponse.java:99)\n\tat org.elasticsearch.rest.BytesRestResponse.<init>(BytesRestResponse.java:82)\n\tat org.elasticsearch.rest.action.RestActionListener.onFailure(RestActionListener.java:55)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:40)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:87)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:81)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:83)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:77)\n\tat org.elasticsearch.action.ActionListener.completeWith(ActionListener.java:445)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$1(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$2(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:53)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction.newResponse(TransportNodesAction.java:133)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction$AsyncAction.lambda$finishHim$0(TransportNodesAction.java:267)\n\tat org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:673)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\nCaused by: java.lang.IllegalArgumentException: Values less than -1 bytes are not supported: -5884395520b\n\tat org.elasticsearch.common.unit.ByteSizeValue.<init>(ByteSizeValue.java:93)\n\tat org.elasticsearch.common.unit.ByteSizeValue.<init>(ByteSizeValue.java:88)\n\tat org.elasticsearch.monitor.os.OsStats$Mem.getUsed(OsStats.java:297)\n\tat org.elasticsearch.monitor.os.OsStats$Mem.toXContent(OsStats.java:317)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsNodes$OsStats.toXContent(ClusterStatsNodes.java:351)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsNodes.toXContent(ClusterStatsNodes.java:150)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsResponse.toXContent(ClusterStatsResponse.java:141)\n\tat org.elasticsearch.rest.action.RestActions.nodesResponse(RestActions.java:173)\n\tat org.elasticsearch.rest.action.RestActions$NodesResponseRestListener.buildResponse(RestActions.java:226)\n\tat org.elasticsearch.rest.action.RestActions$NodesResponseRestListener.buildResponse(RestActions.java:217)\n\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:27)\n\tat org.elasticsearch.rest.action.RestResponseListener.processResponse(RestResponseListener.java:26)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:38)\n\t... 27 more\n\tSuppressed: java.lang.IllegalStateException: Failed to close the XContentBuilder\n\t\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1038)\n\t\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:26)\n\t\t... 29 more\n\tCaused by: java.io.IOException: Unclosed object or array found\n\t\tat org.elasticsearch.common.xcontent.json.JsonXContentGenerator.close(JsonXContentGenerator.java:455)\n\t\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1036)\n\t\t... 30 more\n"}],"type":"illegal_argument_exception","reason":"Values less than -1 bytes are not supported: -5884395520b","stack_trace":"java.lang.IllegalArgumentException: Values less than -1 bytes are not supported: -5884395520b\n\tat org.elasticsearch.common.unit.ByteSizeValue.<init>(ByteSizeValue.java:93)\n\tat org.elasticsearch.common.unit.ByteSizeValue.<init>(ByteSizeValue.java:88)\n\tat org.elasticsearch.monitor.os.OsStats$Mem.getUsed(OsStats.java:297)\n\tat org.elasticsearch.monitor.os.OsStats$Mem.toXContent(OsStats.java:317)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsNodes$OsStats.toXContent(ClusterStatsNodes.java:351)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsNodes.toXContent(ClusterStatsNodes.java:150)\n\tat org.elasticsearch.action.admin.cluster.stats.ClusterStatsResponse.toXContent(ClusterStatsResponse.java:141)\n\tat org.elasticsearch.rest.action.RestActions.nodesResponse(RestActions.java:173)\n\tat org.elasticsearch.rest.action.RestActions$NodesResponseRestListener.buildResponse(RestActions.java:226)\n\tat org.elasticsearch.rest.action.RestActions$NodesResponseRestListener.buildResponse(RestActions.java:217)\n\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:27)\n\tat org.elasticsearch.rest.action.RestResponseListener.processResponse(RestResponseListener.java:26)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:38)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:87)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:81)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:83)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:77)\n\tat org.elasticsearch.action.ActionListener.completeWith(ActionListener.java:445)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$1(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$2(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:53)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction.newResponse(TransportNodesAction.java:133)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction$AsyncAction.lambda$finishHim$0(TransportNodesAction.java:267)\n\tat org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:673)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\n\tSuppressed: java.lang.IllegalStateException: Failed to close the XContentBuilder\n\t\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1038)\n\t\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:26)\n\t\t... 29 more\n\tCaused by: java.io.IOException: Unclosed object or array found\n\t\tat org.elasticsearch.common.xcontent.json.JsonXContentGenerator.close(JsonXContentGenerator.java:455)\n\t\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1036)\n\t\t... 30 more\n","suppressed":[{"type":"illegal_state_exception","reason":"Failed to close the XContentBuilder","caused_by":{"type":"i_o_exception","reason":"Unclosed object or array found","stack_trace":"java.io.IOException: Unclosed object or array found\n\tat org.elasticsearch.common.xcontent.json.JsonXContentGenerator.close(JsonXContentGenerator.java:455)\n\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1036)\n\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:26)\n\tat org.elasticsearch.rest.action.RestResponseListener.processResponse(RestResponseListener.java:26)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:38)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:87)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:81)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:83)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:77)\n\tat org.elasticsearch.action.ActionListener.completeWith(ActionListener.java:445)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$1(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$2(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:53)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction.newResponse(TransportNodesAction.java:133)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction$AsyncAction.lambda$finishHim$0(TransportNodesAction.java:267)\n\tat org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:673)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\n"},"stack_trace":"java.lang.IllegalStateException: Failed to close the XContentBuilder\n\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1038)\n\tat org.elasticsearch.rest.action.RestBuilderListener.buildResponse(RestBuilderListener.java:26)\n\tat org.elasticsearch.rest.action.RestResponseListener.processResponse(RestResponseListener.java:26)\n\tat org.elasticsearch.rest.action.RestActionListener.onResponse(RestActionListener.java:38)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:87)\n\tat org.elasticsearch.rest.action.RestCancellableNodeClient$1.onResponse(RestCancellableNodeClient.java:81)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:83)\n\tat org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:77)\n\tat org.elasticsearch.action.ActionListener.completeWith(ActionListener.java:445)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$1(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.lambda$newResponseAsync$2(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:134)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.notifyListenerDirectly(ListenableFuture.java:113)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:55)\n\tat org.elasticsearch.common.util.concurrent.ListenableFuture.addListener(ListenableFuture.java:41)\n\tat org.elasticsearch.action.StepListener.addListener(StepListener.java:107)\n\tat org.elasticsearch.action.StepListener.whenComplete(StepListener.java:68)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:94)\n\tat org.elasticsearch.action.admin.cluster.stats.TransportClusterStatsAction.newResponseAsync(TransportClusterStatsAction.java:53)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction.newResponse(TransportNodesAction.java:133)\n\tat org.elasticsearch.action.support.nodes.TransportNodesAction$AsyncAction.lambda$finishHim$0(TransportNodesAction.java:267)\n\tat org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:673)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\nCaused by: java.io.IOException: Unclosed object or array found\n\tat org.elasticsearch.common.xcontent.json.JsonXContentGenerator.close(JsonXContentGenerator.java:455)\n\tat org.elasticsearch.common.xcontent.XContentBuilder.close(XContentBuilder.java:1036)\n\t... 30 more\n"}]},"status":400}]

    at org.junit.Assert.fail(Assert.java:88)
    at org.elasticsearch.test.rest.yaml.section.DoSection.execute(DoSection.java:354)
    at org.elasticsearch.test.rest.yaml.ESClientYamlSuiteTestCase.executeSection(ESClientYamlSuiteTestCase.java:455)
    at org.elasticsearch.test.rest.yaml.ESClientYamlSuiteTestCase.test(ESClientYamlSuiteTestCase.java:439)
    at sun.reflect.GeneratedMethodAccessor21.invoke(null:-1)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1750)
    at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:938)
    at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:974)
    at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:988)
    at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
    at org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:49)
    at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
    at org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:48)
    at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
    at org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
    at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
    at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
    at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:817)
    at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:468)
    at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:947)
    at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:832)
    at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:883)
    at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:894)
    at org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:45)
    at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
    at org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:41)
    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 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.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:47)
    at org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:64)
    at org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:54)
    at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
    at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
    at java.lang.Thread.run(Thread.java:748)

[elasticmachine]

Pinging @elastic/es-core-features (Team:Core/Features)

[danhermann]

This test is failing only on mixed clusters with 6.8 nodes (and still pretty infrequently at that) . Given the impending EOL of 6.8, it's probably not worth tracking down this failure.

[dakrone]

I think since we've addressed the -1 serialization in stats in as many places as we can, and since it's been a few months since the last failure for this (and as Dan mentioned, this only failed on mixed clusters with 6.8 nodes), I agree with Dan and I think we can close this.