Details
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Bug
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Resolution: Done
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Major
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7.70.0.Final
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None
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2022 Week 20-22 (from May 16)
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2
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NEW
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NEW
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Description
ObjectMapper._typeFactory is a shared singleton by default. This could lead to large heap/metaspace retention especially when kjar update is involved.
for example, Eclipse Memory Analyzer output:
"com.example.manyrules.Rule_ManyRules_1153511144278DefaultConsequenceInvoker" -> "Marge shortest paths to GC root" -> "exclude all phantom/weak/soft etc. references"
Class Name | Referenced Objects | Shallow Heap | Ref. Shallow Heap | Retained Heap
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java.lang.Thread @ 0xcd64c5f0 drools-worker-5 Thread | 1 | 112 | 16 | 576
'- contextClassLoader org.jboss.modules.ModuleClassLoader @ 0xb78590d8 | 1 | 96 | 16 | 13,415,712
'- classes java.util.Vector @ 0xba5c1a20 | 1 | 32 | 16 | 12,871,928
'- elementData java.lang.Object[10240] @ 0xcbd34d88 | 1 | 40,976 | 16 | 12,871,896
'- [1324] class org.kie.server.services.dmn.ModelEvaluatorServiceBase @ 0xb9725a48 | 1 | 16 | 16 | 8,704
'- objectMapper com.fasterxml.jackson.databind.ObjectMapper @ 0xb9725ac0 | 1 | 72 | 16 | 8,424
'- _typeFactory com.fasterxml.jackson.databind.type.TypeFactory @ 0xb7d0dea0 | 1 | 32 | 16 | 377,668,240
'- _typeCache com.fasterxml.jackson.databind.util.LRUMap @ 0xb7d0dec0 | 1 | 24 | 16 | 377,668,192
'- _map java.util.concurrent.ConcurrentHashMap @ 0xb7d0ded8 | 1 | 64 | 16 | 377,668,168
'- table java.util.concurrent.ConcurrentHashMap$Node[256] @ 0xcf963b20 | 1 | 1,040 | 16 | 377,668,104
'- [150] java.util.concurrent.ConcurrentHashMap$Node @ 0xd90969b8 | 1 | 32 | 16 | 104
'- key class com.example.manyrules.Fact @ 0xd5ebaa48 | 1 | 8 | 16 | 32
'- <classloader> org.drools.dynamic.DynamicProjectClassLoader$DefaultInternalTypesClassLoader @ 0xd449b708 | 1 | 80 | 16 | 187,309,984
'- projectClassLoader org.drools.dynamic.DynamicProjectClassLoader @ 0xd319f608 | 1 | 104 | 16 | 187,306,576
'- resourceProvider org.drools.compiler.kie.builder.impl.AbstractKieModule$KieModuleResourceProvider @ 0xd31a0c60 | 1 | 24 | 16 | 187,293,504
'- kieModule org.drools.compiler.kie.builder.impl.ZipKieModule @ 0xd560c0b8 | 1 | 64 | 16 | 187,293,208
'- kBuilders java.util.HashMap @ 0xd1042908 | 1 | 48 | 16 | 80,870,640
'- table java.util.HashMap$Node[16] @ 0xd87069e0 | 1 | 80 | 16 | 80,870,592
'- [3] java.util.HashMap$Node @ 0xd8706a30 | 1 | 32 | 16 | 80,870,512
'- value org.drools.compiler.builder.impl.KnowledgeBuilderImpl @ 0xd560bfe0 | 1 | 88 | 16 | 80,870,480
'- pkgRegistryMap java.util.concurrent.ConcurrentHashMap @ 0xd2d9d070 | 1 | 64 | 16 | 65,577,944
'- table java.util.concurrent.ConcurrentHashMap$Node[16] @ 0xd52b7568 | 1 | 80 | 16 | 65,577,864
'- [0] java.util.concurrent.ConcurrentHashMap$Node @ 0xd52b75b8 | 1 | 32 | 16 | 65,577,784
'- val org.drools.compiler.compiler.PackageRegistry @ 0xd4722258 | 1 | 32 | 16 | 65,577,752
'- pkg org.drools.core.definitions.impl.KnowledgePackageImpl @ 0xd472c848 | 1 | 96 | 16 | 472,032
'- rules java.util.LinkedHashMap @ 0xd472c8a8 | 1 | 56 | 16 | 465,624
'- table java.util.HashMap$Node[16384] @ 0xd736c160 | 1 | 65,552 | 16 | 65,552
'- [285] java.util.LinkedHashMap$Entry @ 0xd738ce68 | 1 | 40 | 16 | 40
'- value org.drools.core.definitions.rule.impl.RuleImpl @ 0xd8d32f38 | 1 | 128 | 16 | 2,112
'- consequence com.example.manyrules.Rule_ManyRules_1153511144278DefaultConsequenceInvoker @ 0xd83ac610| 1 | 16 | 16 | 32
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Attachments
Issue Links
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- Closed
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