Build: https://jenkins.thetaphi.de/job/Lucene-Solr-8.11-MacOSX/107/
Java: 64bit/jdk-11.0.6 -XX:+UseCompressedOops -XX:+UseParallelGC

1 tests failed.
FAILED:  
junit.framework.TestSuite.org.apache.solr.cloud.api.collections.TestHdfsCloudBackupRestore

Error Message:
ObjectTracker found 6 object(s) that were not released!!! [InternalHttpClient, 
MMapDirectory, InternalHttpClient, MMapDirectory, SolrCore, MMapDirectory] 
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.http.impl.client.InternalHttpClient  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:341)
  at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:350)
  at 
org.apache.solr.handler.IndexFetcher.createHttpClient(IndexFetcher.java:233)  
at org.apache.solr.handler.IndexFetcher.<init>(IndexFetcher.java:275)  at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:454) 
 at org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:252) 
 at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:394)
  at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)  
at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)  at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
  at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)  at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
  at 
org.apache.solr.core.SolrCore.initSnapshotMetaDataManager(SolrCore.java:553)  
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:995)  at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:921)  at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1452)
  at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1333)  at 
org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:95)
  at 
org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:367)
  at 
org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:397)
  at 
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:181)
  at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:216)
  at org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:836)  
at 
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:800)  
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:545)  at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:427)
  at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:357)
  at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)  at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
  at 
org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:166)
  at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)  at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
  at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) 
 at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
  at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
  at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
  at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)  
at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
  at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)  
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) 
 at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
  at 
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:713)  
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) 
 at org.eclipse.jetty.server.Server.handle(Server.java:516)  at 
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400)  at 
org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645)  at 
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392)  at 
org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352)  at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
  at 
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.http.impl.client.InternalHttpClient  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:341)
  at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:350)
  at 
org.apache.solr.handler.IndexFetcher.createHttpClient(IndexFetcher.java:233)  
at org.apache.solr.handler.IndexFetcher.<init>(IndexFetcher.java:275)  at 
org.apache.solr.handler.ReplicationHandler.inform(ReplicationHandler.java:1289) 
 at 
org.apache.solr.cloud.ReplicateFromLeader.startReplication(ReplicateFromLeader.java:134)
  at 
org.apache.solr.cloud.ZkController.startReplicationFromLeader(ZkController.java:1369)
  at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:414)
  at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)  
at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)  at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
  at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)  at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
  at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:553)  
at org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:384) 
 at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:458) 
 at 
org.apache.solr.handler.ReplicationHandler.lambda$setupPolling$13(ReplicationHandler.java:1255)
  at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) 
 at 
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.solr.core.SolrCore  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1092)  at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:921)  at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1452)
  at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1333)  at 
org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:95)
  at 
org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:367)
  at 
org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:397)
  at 
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:181)
  at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:216)
  at org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:836)  
at 
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:800)  
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:545)  at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:427)
  at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:357)
  at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)  at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
  at 
org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:166)
  at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)  at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
  at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) 
 at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
  at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
  at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
  at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)  
at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
  at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)  
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) 
 at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
  at 
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:713)  
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) 
 at org.eclipse.jetty.server.Server.handle(Server.java:516)  at 
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400)  at 
org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645)  at 
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392)  at 
org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352)  at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
  at 
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
  at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:553)  
at org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:384) 
 at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:458) 
 at org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:252) 
 at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:394)
  at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)  
at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)  at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
  at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)  at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)   expected null, but 
was:<ObjectTracker found 6 object(s) that were not released!!! 
[InternalHttpClient, MMapDirectory, InternalHttpClient, MMapDirectory, 
SolrCore, MMapDirectory] 
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.http.impl.client.InternalHttpClient  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:341)
  at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:350)
  at 
org.apache.solr.handler.IndexFetcher.createHttpClient(IndexFetcher.java:233)  
at org.apache.solr.handler.IndexFetcher.<init>(IndexFetcher.java:275)  at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:454) 
 at org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:252) 
 at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:394)
  at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)  
at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)  at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
  at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)  at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
  at 
org.apache.solr.core.SolrCore.initSnapshotMetaDataManager(SolrCore.java:553)  
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:995)  at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:921)  at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1452)
  at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1333)  at 
org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:95)
  at 
org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:367)
  at 
org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:397)
  at 
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:181)
  at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:216)
  at org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:836)  
at 
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:800)  
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:545)  at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:427)
  at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:357)
  at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)  at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
  at 
org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:166)
  at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)  at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
  at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) 
 at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
  at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
  at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
  at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)  
at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
  at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)  
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) 
 at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
  at 
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:713)  
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) 
 at org.eclipse.jetty.server.Server.handle(Server.java:516)  at 
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400)  at 
org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645)  at 
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392)  at 
org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352)  at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
  at 
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.http.impl.client.InternalHttpClient  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:341)
  at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:350)
  at 
org.apache.solr.handler.IndexFetcher.createHttpClient(IndexFetcher.java:233)  
at org.apache.solr.handler.IndexFetcher.<init>(IndexFetcher.java:275)  at 
org.apache.solr.handler.ReplicationHandler.inform(ReplicationHandler.java:1289) 
 at 
org.apache.solr.cloud.ReplicateFromLeader.startReplication(ReplicateFromLeader.java:134)
  at 
org.apache.solr.cloud.ZkController.startReplicationFromLeader(ZkController.java:1369)
  at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:414)
  at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)  
at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)  at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
  at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)  at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
  at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:553)  
at org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:384) 
 at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:458) 
 at 
org.apache.solr.handler.ReplicationHandler.lambda$setupPolling$13(ReplicationHandler.java:1255)
  at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) 
 at 
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.solr.core.SolrCore  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1092)  at 
org.apache.solr.core.SolrCore.<init>(SolrCore.java:921)  at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1452)
  at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1333)  at 
org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:95)
  at 
org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:367)
  at 
org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:397)
  at 
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:181)
  at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:216)
  at org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:836)  
at 
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:800)  
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:545)  at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:427)
  at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:357)
  at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)  at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
  at 
org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:166)
  at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)  at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
  at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) 
 at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
  at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
  at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
  at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)  
at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
  at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
  at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)  
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) 
 at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
  at 
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:713)  
at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) 
 at org.eclipse.jetty.server.Server.handle(Server.java:516)  at 
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400)  at 
org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645)  at 
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392)  at 
org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352)  at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
  at 
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
  at java.base/java.lang.Thread.run(Thread.java:834)  
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory  at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
  at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
  at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:553)  
at org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:384) 
 at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:458) 
 at org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:252) 
 at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:394)
  at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)  
at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)  at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
  at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
  at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)  at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
  at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
  at java.base/java.lang.Thread.run(Thread.java:834)  >

Stack Trace:
java.lang.AssertionError: ObjectTracker found 6 object(s) that were not 
released!!! [InternalHttpClient, MMapDirectory, InternalHttpClient, 
MMapDirectory, SolrCore, MMapDirectory]
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.http.impl.client.InternalHttpClient
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:341)
        at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:350)
        at 
org.apache.solr.handler.IndexFetcher.createHttpClient(IndexFetcher.java:233)
        at org.apache.solr.handler.IndexFetcher.<init>(IndexFetcher.java:275)
        at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:454)
        at 
org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:252)
        at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:394)
        at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)
        at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)
        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
        at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
        at 
org.apache.solr.core.SolrCore.initSnapshotMetaDataManager(SolrCore.java:553)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:995)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:921)
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1452)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1333)
        at 
org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:95)
        at 
org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:367)
        at 
org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:397)
        at 
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:181)
        at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:216)
        at 
org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:836)
        at 
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:800)
        at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:545)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:427)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:357)
        at 
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at 
org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:166)
        at 
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
        at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
        at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
        at 
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:713)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at org.eclipse.jetty.server.Server.handle(Server.java:516)
        at 
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400)
        at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392)
        at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.http.impl.client.InternalHttpClient
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:341)
        at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:350)
        at 
org.apache.solr.handler.IndexFetcher.createHttpClient(IndexFetcher.java:233)
        at org.apache.solr.handler.IndexFetcher.<init>(IndexFetcher.java:275)
        at 
org.apache.solr.handler.ReplicationHandler.inform(ReplicationHandler.java:1289)
        at 
org.apache.solr.cloud.ReplicateFromLeader.startReplication(ReplicateFromLeader.java:134)
        at 
org.apache.solr.cloud.ZkController.startReplicationFromLeader(ZkController.java:1369)
        at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:414)
        at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)
        at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)
        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
        at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
        at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:553)
        at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:384)
        at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:458)
        at 
org.apache.solr.handler.ReplicationHandler.lambda$setupPolling$13(ReplicationHandler.java:1255)
        at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at 
java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
        at 
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.solr.core.SolrCore
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1092)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:921)
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1452)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1333)
        at 
org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:95)
        at 
org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:367)
        at 
org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:397)
        at 
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:181)
        at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:216)
        at 
org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:836)
        at 
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:800)
        at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:545)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:427)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:357)
        at 
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at 
org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:166)
        at 
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
        at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
        at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
        at 
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:713)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at org.eclipse.jetty.server.Server.handle(Server.java:516)
        at 
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400)
        at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392)
        at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
        at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:553)
        at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:384)
        at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:458)
        at 
org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:252)
        at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:394)
        at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)
        at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)
        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
        at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

 expected null, but was:<ObjectTracker found 6 object(s) that were not 
released!!! [InternalHttpClient, MMapDirectory, InternalHttpClient, 
MMapDirectory, SolrCore, MMapDirectory]
org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.http.impl.client.InternalHttpClient
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:341)
        at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:350)
        at 
org.apache.solr.handler.IndexFetcher.createHttpClient(IndexFetcher.java:233)
        at org.apache.solr.handler.IndexFetcher.<init>(IndexFetcher.java:275)
        at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:454)
        at 
org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:252)
        at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:394)
        at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)
        at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)
        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
        at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
        at 
org.apache.solr.core.SolrCore.initSnapshotMetaDataManager(SolrCore.java:553)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:995)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:921)
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1452)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1333)
        at 
org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:95)
        at 
org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:367)
        at 
org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:397)
        at 
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:181)
        at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:216)
        at 
org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:836)
        at 
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:800)
        at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:545)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:427)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:357)
        at 
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at 
org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:166)
        at 
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
        at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
        at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
        at 
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:713)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at org.eclipse.jetty.server.Server.handle(Server.java:516)
        at 
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400)
        at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392)
        at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.http.impl.client.InternalHttpClient
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:341)
        at 
org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:350)
        at 
org.apache.solr.handler.IndexFetcher.createHttpClient(IndexFetcher.java:233)
        at org.apache.solr.handler.IndexFetcher.<init>(IndexFetcher.java:275)
        at 
org.apache.solr.handler.ReplicationHandler.inform(ReplicationHandler.java:1289)
        at 
org.apache.solr.cloud.ReplicateFromLeader.startReplication(ReplicateFromLeader.java:134)
        at 
org.apache.solr.cloud.ZkController.startReplicationFromLeader(ZkController.java:1369)
        at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:414)
        at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)
        at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)
        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
        at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
        at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:553)
        at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:384)
        at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:458)
        at 
org.apache.solr.handler.ReplicationHandler.lambda$setupPolling$13(ReplicationHandler.java:1255)
        at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at 
java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
        at 
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.solr.core.SolrCore
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:1092)
        at org.apache.solr.core.SolrCore.<init>(SolrCore.java:921)
        at 
org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1452)
        at org.apache.solr.core.CoreContainer.create(CoreContainer.java:1333)
        at 
org.apache.solr.handler.admin.CoreAdminOperation.lambda$static$0(CoreAdminOperation.java:95)
        at 
org.apache.solr.handler.admin.CoreAdminOperation.execute(CoreAdminOperation.java:367)
        at 
org.apache.solr.handler.admin.CoreAdminHandler$CallInfo.call(CoreAdminHandler.java:397)
        at 
org.apache.solr.handler.admin.CoreAdminHandler.handleRequestBody(CoreAdminHandler.java:181)
        at 
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:216)
        at 
org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:836)
        at 
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:800)
        at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:545)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:427)
        at 
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:357)
        at 
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at 
org.apache.solr.client.solrj.embedded.JettySolrRunner$DebugFilter.doFilter(JettySolrRunner.java:166)
        at 
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at 
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at 
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at 
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
        at 
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
        at 
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
        at 
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
        at 
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at 
org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:322)
        at 
org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:713)
        at 
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at org.eclipse.jetty.server.Server.handle(Server.java:516)
        at 
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:400)
        at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:645)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:392)
        at org.eclipse.jetty.server.HttpChannel.run(HttpChannel.java:352)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
        at 
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
        at java.base/java.lang.Thread.run(Thread.java:834)

org.apache.solr.common.util.ObjectReleaseTracker$ObjectTrackerException: 
org.apache.lucene.store.MMapDirectory
        at 
org.apache.solr.common.util.ObjectReleaseTracker.track(ObjectReleaseTracker.java:42)
        at 
org.apache.solr.core.CachingDirectoryFactory.get(CachingDirectoryFactory.java:362)
        at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:553)
        at 
org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:384)
        at 
org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:458)
        at 
org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:252)
        at 
org.apache.solr.cloud.RecoveryStrategy.doReplicateOnlyRecovery(RecoveryStrategy.java:394)
        at 
org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:341)
        at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:318)
        at 
com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:180)
        at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at 
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:218)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

>
        at __randomizedtesting.SeedInfo.seed([E272E90DEE4D9676]:0)
        at org.junit.Assert.fail(Assert.java:89)
        at org.junit.Assert.failNotNull(Assert.java:756)
        at org.junit.Assert.assertNull(Assert.java:738)
        at 
org.apache.solr.SolrTestCaseJ4.teardownTestCases(SolrTestCaseJ4.java:334)
        at jdk.internal.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
        at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1750)
        at 
com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:901)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        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: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 
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$1.evaluate(TestRuleIgnoreTestSuites.java:54)
        at org.junit.rules.RunRules.evaluate(RunRules.java:20)
        at 
com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
        at 
com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:368)
        at java.base/java.lang.Thread.run(Thread.java:834)
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