[ https://issues.jboss.org/browse/WFLY-12671?page=com.atlassian.jira.plugin... ] Robin Schimpf commented on WFLY-12671: -------------------------------------- I used the heapdump from the {{memory leak after 5 deployments.png}} screenshot and got this as result {code} Class Name | Ref. Objects | Shallow Heap | Ref. Shallow Heap | Retained Heap ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | | | class java.lang.ApplicationShutdownHooks @ 0x801041b0 System Class | 3 | 8 | 336 | 111.370.344 '- hooks java.util.IdentityHashMap @ 0x8033ba98 | 3 | 40 | 336 | 111.370.336 '- table java.lang.Object[64] @ 0x8033bac0 | 3 | 272 | 336 | 111.370.296 |- [24], [25] org.quartz.plugins.management.ShutdownHookPlugin$1 @ 0x8e90adb0 Quartz Shutdown-Hook TaskScheduler | 1 | 128 | 112 | 371.008 | '- val$scheduler org.quartz.impl.StdScheduler @ 0x8721c208 | 1 | 16 | 112 | 370.400 | '- sched org.quartz.core.QuartzScheduler @ 0x8721c218 | 1 | 88 | 112 | 370.384 |- [46], [47] org.quartz.plugins.management.ShutdownHookPlugin$1 @ 0xb036f5f8 Quartz Shutdown-Hook TaskScheduler | 1 | 128 | 112 | 371.192 | '- val$scheduler org.quartz.impl.StdScheduler @ 0x8821c4a0 | 1 | 16 | 112 | 370.584 | '- sched org.quartz.core.QuartzScheduler @ 0x8821c4b0 | 1 | 88 | 112 | 370.568 |- [48], [49] org.quartz.plugins.management.ShutdownHookPlugin$1 @ 0xbbc306a0 Quartz Shutdown-Hook TaskScheduler | 1 | 128 | 112 | 371.128 | '- val$scheduler org.quartz.impl.StdScheduler @ 0xaf4f5fd8 | 1 | 16 | 112 | 370.520 | '- sched org.quartz.core.QuartzScheduler @ 0xaf4f5fe8 | 1 | 88 | 112 | 370.504 '- Total: 3 entries | | | | org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread @ 0xeb29d310 Lucene Merge Thread #2 for index Files Native Stack, Thread | 2 | 136 | 224 | 50.291.968 |- <JNI Local> class org.jboss.as.jpa.subsystem.PersistenceUnitRegistryImpl @ 0x8869d388 | 1 | 8 | 112 | 8 | '- INSTANCE org.jboss.as.jpa.subsystem.PersistenceUnitRegistryImpl @ 0x96314ff8 | 1 | 16 | 112 | 208 | '- registry java.util.Collections$SynchronizedMap @ 0x96315008 | 1 | 32 | 112 | 192 | '- m java.util.HashMap @ 0x96315028 | 1 | 48 | 112 | 160 | '- table java.util.HashMap$Node[16] @ 0x96315058 | 1 | 80 | 112 | 112 | '- [1] java.util.HashMap$Node @ 0xd339c0d8 | 1 | 32 | 112 | 32 | '- value org.jboss.as.jpa.service.PersistenceUnitServiceImpl @ 0xcf2e8470 | 1 | 80 | 112 | 1.192 | '- pu org.jboss.as.jpa.config.PersistenceUnitMetadataImpl @ 0xd15a74d0 | 1 | 112 | 112 | 86.151.344 |- <JNI Local> class org.jboss.resteasy.plugins.providers.jsonb.AbstractJsonBindingProvider @ 0xa61cafe8 | 1 | 16 | 112 | 343.456 | '- jsonbObj org.eclipse.yasson.internal.JsonBinding @ 0x8d477108 | 1 | 16 | 112 | 343.384 | '- jsonbContext org.eclipse.yasson.internal.JsonbContext @ 0x8d477118 | 1 | 48 | 112 | 343.368 | '- componentInstanceCreator org.eclipse.yasson.internal.components.BeanManagerInstanceCreator @ 0x8d477238 | 1 | 24 | 112 | 1.000 | '- beanManager org.jboss.weld.bean.builtin.BeanManagerProxy @ 0x84d725a8 | 1 | 24 | 112 | 24 | '- manager org.jboss.weld.manager.BeanManagerImpl @ 0x8d4783a0 | 1 | 152 | 112 | 8.880 | '- services org.jboss.weld.bootstrap.api.helpers.SimpleServiceRegistry @ 0x8d478438 | 1 | 24 | 112 | 4.328 | '- services java.util.HashMap @ 0x8d478450 | 1 | 48 | 112 | 3.504 | '- table java.util.HashMap$Node[128] @ 0x8d478490 | 1 | 528 | 112 | 3.440 | '- [24] java.util.HashMap$Node @ 0x8d4788d0 | 1 | 32 | 112 | 32 | '- value org.jboss.as.weld.services.bootstrap.WeldEjbInjectionServices @ 0x8d4788f0 | 1 | 40 | 112 | 40 | '- applicationDescription org.jboss.as.ee.component.EEApplicationDescription @ 0x85a796f0 | 1 | 24 | 112 | 396.064 | '- componentsByName java.util.HashMap @ 0x85a93900 | 1 | 48 | 112 | 44.216 | '- table java.util.HashMap$Node[512] @ 0x85a93930 | 1 | 2.064 | 112 | 44.168 | '- [45] java.util.HashMap$Node @ 0x85a94140 | 1 | 32 | 112 | 104 | '- value java.util.ArrayList @ 0x85a94160 | 1 | 24 | 112 | 72 | '- elementData java.lang.Object[1] @ 0x85a94178 | 1 | 24 | 112 | 48 | '- [0] org.jboss.as.ee.component.EEApplicationDescription$Description @ 0x85a94190 | 1 | 24 | 112 | 24 | '- componentDescription org.jboss.as.ejb3.component.stateless.StatelessComponentDescription @ 0x98216790 | 1 | 272 | 112 | 4.696 | '- moduleDescription org.jboss.as.ee.component.EEModuleDescription @ 0x982162b0 | 1 | 88 | 112 | 100.728 | '- classDescriptions java.util.HashMap @ 0x9829a5e8 | 1 | 48 | 112 | 85.368 | '- table java.util.HashMap$Node[128] @ 0x9829a628 | 1 | 528 | 112 | 85.304 | '- [40] java.util.HashMap$Node @ 0x9829ad58 | 1 | 32 | 112 | 752 | '- value org.jboss.as.ee.component.EEModuleClassDescription @ 0x9829ad90 | 1 | 40 | 112 | 696 | '- bindingConfigurations java.util.ArrayList @ 0x9829ae08 | 1 | 24 | 112 | 232 | '- elementData java.lang.Object[10] @ 0x9829ae20 | 1 | 56 | 112 | 208 | '- [0] org.jboss.as.ee.component.BindingConfiguration @ 0x9829ae58 | 1 | 24 | 112 | 152 | '- source org.jboss.as.jpa.injectors.PersistenceContextInjectionSource @ 0x9829ae88 | 1 | 24 | 112 | 128 | '- injectable org.jboss.as.jpa.injectors.PersistenceContextInjectionSource$PersistenceContextJndiInjectable @ 0x9829aea0| 1 | 48 | 112 | 72 | '- pu org.jboss.as.jpa.config.PersistenceUnitMetadataImpl @ 0x9829af08 | 1 | 112 | 112 | 85.624.920 '- Total: 2 entries | | | | Total: 2 entries | 5 | 144 | 560 | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ {code} Seems like lucene is holding the context which we use via the hibernate-search contained in Wildfly. The ApplicationShutdownHooks tree is not fully expanded because there are coming some internal classes. The leaking there is most likely due to some of our code. -- This message was sent by Atlassian Jira (v7.13.8#713008)