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Type: Bug
Resolution: Done
Priority: Major
Fix Version/s: 7.13.1.GA, IBM BAMOE 8.0.1.GA
Affects Version/s: 7.2.1.GA, 7.12.1.GA
Component/s: Kie-Server
Labels:
- bamoe-verified
- support
Environment:

This issue is reproducible on at least 7.2.1, 7.12.1.

Blocked:
False
Blocked Reason:
None
Ready:
False
Fix Build:
CR1
QE Test Coverage:
+
Target Release:

7.13.1.GA
Steps to Reproduce:
Hide

Install EAP 7.4.2.

Install only KIE Server using rhdm-installer-7.12.1.jar.

Add/change some system properties for the KIE Server.

<system-properties> : : <property name="org.kie.server.location" value="http://localhost:8080/kie-server/services/rest/server"/> <property name="org.kie.server.user" value="controllerUser"/> <property name="org.kie.server.pwd" value="controllerUser1234;"/> <property name="org.kie.server.id" value="default-kieserver"/> <property name="org.kie.server.mode" value="development"/> <property name="org.kie.server.startup.strategy" value="LocalContainersStartupStrategy"/> </system-properties>

Start the KIE server with -XX:MaxMetaspaceSize=1024m which is given by default in the EAP.

Change controllerUser's password.

$ jboss-cli.sh --connect [standalone@localhost:9990 /] /subsystem=elytron/filesystem-realm=ApplicationRealm:set-password(identity=controllerUser, clear={password="controllerUser1234;"}) {"outcome" => "success"} [standalone@localhost:9990 /] quit

Build example_manyrules_1b.

$ unzip example_manyrules_1b.zip $ cd example_manyrules_1b $ ./run_mvn

Extract example_manyrules_client_1b.

$ unzip example_manyrules_client_1b.zip

Deploy example_manyrules_1b to KIE Server.
(at example_manyrules_1b directory)

$ mvn kieserver:deploy

Execute rules.
(at example_manyrules_client_1b directory)

$ ./run_client : : == Sending a request == Number of fired rules: 10000 : :

Dispose example_manyrules_1b in KIE Server.
(at example_manyrules_1b directory)

$ mvn kieserver:dispose

Repeat Step 8 to 10, four or five times more. "OutOfMemoryError: Metaspace" will occur at Step 8 or 9.
Show
Install EAP 7.4.2. Install only KIE Server using rhdm-installer-7.12.1.jar . Add/change some system properties for the KIE Server. <system-properties> : : <property name="org.kie.server.location" value="http://localhost:8080/kie-server/services/rest/server"/> <property name="org.kie.server.user" value="controllerUser"/> <property name="org.kie.server.pwd" value="controllerUser1234;"/> <property name="org.kie.server.id" value="default-kieserver"/> <property name="org.kie.server.mode" value="development"/> <property name="org.kie.server.startup.strategy" value="LocalContainersStartupStrategy"/> </system-properties> Start the KIE server with -XX:MaxMetaspaceSize=1024m which is given by default in the EAP. Change controllerUser's password. $ jboss-cli.sh --connect [standalone@localhost:9990 /] /subsystem=elytron/filesystem-realm=ApplicationRealm:set-password(identity=controllerUser, clear={password="controllerUser1234;"}) {"outcome" => "success"} [standalone@localhost:9990 /] quit Build example_manyrules_1b . $ unzip example_manyrules_1b.zip $ cd example_manyrules_1b $ ./run_mvn Extract example_manyrules_client_1b . $ unzip example_manyrules_client_1b.zip Deploy example_manyrules_1b to KIE Server. (at example_manyrules_1b directory) $ mvn kieserver:deploy Execute rules. (at example_manyrules_client_1b directory) $ ./run_client : : == Sending a request == Number of fired rules: 10000 : : Dispose example_manyrules_1b in KIE Server. (at example_manyrules_1b directory) $ mvn kieserver:dispose Repeat Step 8 to 10, four or five times more. "OutOfMemoryError: Metaspace" will occur at Step 8 or 9.

Sprint:
2022 Week 20-22 (from May 16), 2022 Week 26-28 (from Jun 27), 2022 Week 29-31 (from Jul 18)

SFDC Cases Counter:
SFDC Cases Links:

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
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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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example_manyrules_1b.zip
131 kB
2022/06/03 7:35 AM
example_manyrules_client_1b.zip
5 kB
2022/06/03 7:35 AM

Issue Links

incorporates

DROOLS-7000 class retention by JSONMashaller ObjectMapper._typeFactory._typeCache

Closed

Activity

People

Assignee:: Toshiya Kobayashi

Reporter:: Masato Yoshida

Tester:: Daniel Rosa

QA Contact:: Daniel Rosa

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 2022/06/03 7:38 AM

Updated:: 2024/02/13 10:11 AM

Resolved:: 2022/07/27 8:49 AM