Build: https://jenkins.thetaphi.de/job/Solr-main-MacOSX/482/
Java: 64bit/jdk-16 -XX:+UseCompressedOops -XX:+UseSerialGC

7 tests failed.
FAILED:  
org.apache.solr.handler.component.DistributedQueryComponentCustomSortTest.test

Error Message:
org.apache.solr.client.solrj.impl.BaseHttpSolrClient$RemoteSolrException: Error 
from server at http://127.0.0.1:51474/collection1: 
org.apache.solr.client.solrj.SolrServerException: Connection refused

Stack Trace:
org.apache.solr.client.solrj.impl.BaseHttpSolrClient$RemoteSolrException: Error 
from server at http://127.0.0.1:51474/collection1: 
org.apache.solr.client.solrj.SolrServerException: Connection refused
        at 
__randomizedtesting.SeedInfo.seed([374B7B0040405CDF:BF1F44DAEEBC3127]:0)
        at 
app//org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:668)
        at 
app//org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:239)
        at 
app//org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:222)
        at 
app//org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:226)
        at 
app//org.apache.solr.client.solrj.SolrClient.query(SolrClient.java:1004)
        at 
app//org.apache.solr.client.solrj.SolrClient.query(SolrClient.java:1019)
        at 
app//org.apache.solr.BaseDistributedSearchTestCase.queryServer(BaseDistributedSearchTestCase.java:623)
        at 
app//org.apache.solr.handler.component.DistributedQueryComponentCustomSortTest.queryAllowPartialResults(DistributedQueryComponentCustomSortTest.java:141)
        at 
app//org.apache.solr.handler.component.DistributedQueryComponentCustomSortTest.test(DistributedQueryComponentCustomSortTest.java:131)
        at 
java.base@16/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
        at 
java.base@16/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
        at 
java.base@16/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base@16/java.lang.reflect.Method.invoke(Method.java:567)
        at 
app//com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1754)
        at 
app//com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:942)
        at 
app//com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:978)
        at 
app//com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:992)
        at 
app//org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsFixedStatement.callStatement(BaseDistributedSearchTestCase.java:1081)
        at 
app//org.apache.solr.BaseDistributedSearchTestCase$ShardsRepeatRule$ShardsStatement.evaluate(BaseDistributedSearchTestCase.java:1052)
        at 
app//com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at app//org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
app//org.apache.lucene.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:44)
        at 
app//org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
app//org.apache.lucene.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)
        at 
app//org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
        at 
app//org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
        at app//org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
app//com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
app//com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
app//com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:819)
        at 
app//com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:470)
        at 
app//com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:951)
        at 
app//com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:836)
        at 
app//com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:887)
        at 
app//com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:898)
        at 
app//com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
app//org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
app//org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
app//com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at app//org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
app//org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
app//com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
app//org.apache.lucene.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:38)
        at 
app//com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
app//com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
        at 
app//com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
app//com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
app//org.apache.lucene.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
        at 
app//org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
app//org.apache.lucene.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
        at 
app//org.apache.lucene.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
        at 
app//org.apache.lucene.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:47)
        at app//org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
app//com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
app//com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
app//com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:826)
        at java.base@16/java.lang.Thread.run(Thread.java:831)


FAILED:  org.apache.solr.cloud.TestLeaderElectionZkExpiry.classMethod

Error Message:
com.carrotsearch.randomizedtesting.ThreadLeakError: 7 threads leaked from SUITE 
scope at org.apache.solr.cloud.TestLeaderElectionZkExpiry: 
   1) Thread[id=26927, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=WAITING, 
group=TGRP-TestLeaderElectionZkExpiry]
        at java.base@16/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@16/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341)
        at 
java.base@16/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionNode.block(AbstractQueuedSynchronizer.java:505)
        at 
java.base@16/java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3137)
        at 
java.base@16/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1614)
        at 
java.base@16/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:551)
   2) Thread[id=26907, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   3) Thread[id=26911, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   4) Thread[id=26913, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   5) Thread[id=26919, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   6) Thread[id=26909, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   7) Thread[id=26925, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=WAITING, 
group=TGRP-TestLeaderElectionZkExpiry]
        at java.base@16/java.lang.Object.wait(Native Method)
        at java.base@16/java.lang.Object.wait(Object.java:320)
        at 
app//org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1584)
        at 
app//org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1556)
        at app//org.apache.zookeeper.ClientCnxn.close(ClientCnxn.java:1523)
        at app//org.apache.zookeeper.ZooKeeper.close(ZooKeeper.java:1227)
        at 
app//org.apache.solr.common.cloud.SolrZooKeeper.close(SolrZooKeeper.java:97)
        at 
app//org.apache.solr.common.cloud.SolrZkClient.updateKeeper(SolrZkClient.java:665)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:161)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)

Stack Trace:
com.carrotsearch.randomizedtesting.ThreadLeakError: 7 threads leaked from SUITE 
scope at org.apache.solr.cloud.TestLeaderElectionZkExpiry: 
   1) Thread[id=26927, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=WAITING, 
group=TGRP-TestLeaderElectionZkExpiry]
        at java.base@16/jdk.internal.misc.Unsafe.park(Native Method)
        at 
java.base@16/java.util.concurrent.locks.LockSupport.park(LockSupport.java:341)
        at 
java.base@16/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionNode.block(AbstractQueuedSynchronizer.java:505)
        at 
java.base@16/java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3137)
        at 
java.base@16/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1614)
        at 
java.base@16/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:435)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:551)
   2) Thread[id=26907, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   3) Thread[id=26911, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   4) Thread[id=26913, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   5) Thread[id=26919, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   6) Thread[id=26909, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=BLOCKED, 
group=TGRP-TestLeaderElectionZkExpiry]
        at 
app//org.apache.solr.common.cloud.ZkStateReader.createClusterStateWatchersAndUpdate(ZkStateReader.java:393)
        at 
app//org.apache.solr.cloud.ZkController$1.command(ZkController.java:334)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:170)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
   7) Thread[id=26925, 
name=zkConnectionManagerCallback-16866-thread-1-EventThread, state=WAITING, 
group=TGRP-TestLeaderElectionZkExpiry]
        at java.base@16/java.lang.Object.wait(Native Method)
        at java.base@16/java.lang.Object.wait(Object.java:320)
        at 
app//org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1584)
        at 
app//org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1556)
        at app//org.apache.zookeeper.ClientCnxn.close(ClientCnxn.java:1523)
        at app//org.apache.zookeeper.ZooKeeper.close(ZooKeeper.java:1227)
        at 
app//org.apache.solr.common.cloud.SolrZooKeeper.close(SolrZooKeeper.java:97)
        at 
app//org.apache.solr.common.cloud.SolrZkClient.updateKeeper(SolrZkClient.java:665)
        at 
app//org.apache.solr.common.cloud.ConnectionManager$1.update(ConnectionManager.java:161)
        at 
app//org.apache.solr.common.cloud.DefaultConnectionStrategy.reconnect(DefaultConnectionStrategy.java:57)
        at 
app//org.apache.solr.common.cloud.ConnectionManager.process(ConnectionManager.java:152)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:580)
        at 
app//org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:555)
        at __randomizedtesting.SeedInfo.seed([374B7B0040405CDF]:0)


FAILED:  
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.solrExporterDurationMetric

Error Message:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>

Stack Trace:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>
        at 
__randomizedtesting.SeedInfo.seed([374B7B0040405CDF:8C4E004CDEDD692C]:0)
        at org.junit.Assert.fail(Assert.java:89)
        at org.junit.Assert.failNotEquals(Assert.java:835)
        at org.junit.Assert.assertEquals(Assert.java:647)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.getAllMetrics(SolrExporterTestBase.java:110)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.startMetricsExporterWithConfiguration(SolrExporterTestBase.java:79)
        at 
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.setUp(SolrExporterIntegrationTest.java:34)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1754)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:976)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:992)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleMarkFailure.java:44)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:819)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:470)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:951)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:836)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:887)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:898)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleIgnoreTestSuites.java:47)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:826)
        at java.base/java.lang.Thread.run(Thread.java:831)


FAILED:  
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.collectionMetrics

Error Message:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>

Stack Trace:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>
        at 
__randomizedtesting.SeedInfo.seed([374B7B0040405CDF:411404457D24749C]:0)
        at org.junit.Assert.fail(Assert.java:89)
        at org.junit.Assert.failNotEquals(Assert.java:835)
        at org.junit.Assert.assertEquals(Assert.java:647)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.getAllMetrics(SolrExporterTestBase.java:110)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.startMetricsExporterWithConfiguration(SolrExporterTestBase.java:79)
        at 
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.setUp(SolrExporterIntegrationTest.java:34)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1754)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:976)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:992)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleMarkFailure.java:44)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:819)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:470)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:951)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:836)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:887)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:898)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleIgnoreTestSuites.java:47)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:826)
        at java.base/java.lang.Thread.run(Thread.java:831)


FAILED:  
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.jsonFacetMetrics

Error Message:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>

Stack Trace:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>
        at 
__randomizedtesting.SeedInfo.seed([374B7B0040405CDF:41E8C8E169BDAE1]:0)
        at org.junit.Assert.fail(Assert.java:89)
        at org.junit.Assert.failNotEquals(Assert.java:835)
        at org.junit.Assert.assertEquals(Assert.java:647)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.getAllMetrics(SolrExporterTestBase.java:110)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.startMetricsExporterWithConfiguration(SolrExporterTestBase.java:79)
        at 
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.setUp(SolrExporterIntegrationTest.java:34)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1754)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:976)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:992)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleMarkFailure.java:44)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:819)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:470)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:951)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:836)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:887)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:898)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleIgnoreTestSuites.java:47)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:826)
        at java.base/java.lang.Thread.run(Thread.java:831)


FAILED:  
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.pingAllCollectionsAndCoresAreAvailable

Error Message:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>

Stack Trace:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>
        at 
__randomizedtesting.SeedInfo.seed([374B7B0040405CDF:DFD0152F810E1C0D]:0)
        at org.junit.Assert.fail(Assert.java:89)
        at org.junit.Assert.failNotEquals(Assert.java:835)
        at org.junit.Assert.assertEquals(Assert.java:647)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.getAllMetrics(SolrExporterTestBase.java:110)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.startMetricsExporterWithConfiguration(SolrExporterTestBase.java:79)
        at 
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.setUp(SolrExporterIntegrationTest.java:34)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1754)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:976)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:992)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleMarkFailure.java:44)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:819)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:470)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:951)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:836)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:887)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:898)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleIgnoreTestSuites.java:47)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:826)
        at java.base/java.lang.Thread.run(Thread.java:831)


FAILED:  
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.jvmMetrics

Error Message:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>

Stack Trace:
java.lang.AssertionError: Metric must have name and value: 
solr_metrics_jvm_buffers{pool="mapped - 'non-volatile 
memory'",base_url="http://127.0.0.1:62102/solr",} 0.0 expected:<2> but was:<5>
        at 
__randomizedtesting.SeedInfo.seed([374B7B0040405CDF:E4FF46EF55AE904B]:0)
        at org.junit.Assert.fail(Assert.java:89)
        at org.junit.Assert.failNotEquals(Assert.java:835)
        at org.junit.Assert.assertEquals(Assert.java:647)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.getAllMetrics(SolrExporterTestBase.java:110)
        at 
org.apache.solr.prometheus.exporter.SolrExporterTestBase.startMetricsExporterWithConfiguration(SolrExporterTestBase.java:79)
        at 
org.apache.solr.prometheus.exporter.SolrExporterIntegrationTest.setUp(SolrExporterIntegrationTest.java:34)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1754)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:976)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:992)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleMarkFailure.java:44)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:819)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:470)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:951)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:836)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:887)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:898)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
org.apache.lucene.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
        at 
com.carrotsearch.randomizedtesting.rules.SystemPropertiesRestoreRule$1.evaluate(SystemPropertiesRestoreRule.java:57)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        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$1.evaluate(TestRuleIgnoreTestSuites.java:47)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:370)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:826)
        at java.base/java.lang.Thread.run(Thread.java:831)
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