[rules-users] DROOLS 5.6.0 Final Decision Table PermGen space OutOfMemoryError
Mark Proctor
mproctor at codehaus.org
Sat Aug 16 11:58:29 EDT 2014
try increasing your perm gen space.
Mark
On 16 Aug 2014, at 04:11, Jan Rose <ufos at comcast.net> wrote:
> Would like some advice regarding using Decision Tables in DROOLS 5.6.0 Final. We have decision tables with over 12,000 rows. It is a basic ‘look-up’ table with 3 conditions and 2 actions. The conditions are, for example: Company = X Dept = X Class = X then value = X and log X. When I reduced the number of rows to approx. 500 . .. it works.
> I have set the max memory in the JVM to 2 gigs. We have tried compiling the decision tables using the spreadsheet compiler as well as the decision table compiler.
> Below is the error when using the decision table compiler. However, we get the same PermGen space error with the spreadsheet compiler.
>
> Obviously, we need to be able to have more than 500 rows in our decision table(s). Any advice would be appreciated.
>
> Aug 14, 2014 6:33:09 PM com.macys.test.rules.engine.AttribDecisionTbl main
> INFO: found file:c:\attribute-data.xls
> Aug 14, 2014 6:33:10 PM com.macys.test.test_drools.RuleRunner loadRules
> INFO: Loading file: log-rules.drl
> Aug 14, 2014 6:33:10 PM com.macys.test.test_drools.RuleRunner loadRuleFile
> INFO: found rule file:log-rules.drl
> Aug 14, 2014 6:33:11 PM com.macys.test.test_drools.RuleRunner loadRules
> INFO: Loading file: AttributeRules-MDSLife-V1.xls
> Aug 14, 2014 6:33:11 PM com.macys.test.test_drools.RuleRunner loadExcelRules
> INFO: found file:AttributeRules-MDSLife-V1.xls
> Exception in thread "main" java.lang.OutOfMemoryError: PermGen space
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
> at org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.fastFindClass(JavaDialectRuntimeData.java:624)
> at org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:254)
> at org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:237)
> at org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:88)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
> at org.drools.rule.JavaDialectRuntimeData.wire(JavaDialectRuntimeData.java:434)
> at org.drools.rule.JavaDialectRuntimeData.wire(JavaDialectRuntimeData.java:429)
> at org.drools.rule.JavaDialectRuntimeData.onBeforeExecute(JavaDialectRuntimeData.java:257)
> at org.drools.rule.DialectRuntimeRegistry.onBeforeExecute(DialectRuntimeRegistry.java:139)
> at org.drools.compiler.PackageBuilder.reloadAll(PackageBuilder.java:1202)
> at org.drools.compiler.PackageBuilder.compileAllRules(PackageBuilder.java:951)
> at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:938)
> at org.drools.compiler.PackageBuilder.addPackageFromDecisionTable(PackageBuilder.java:451)
> at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:715)
> at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:51)
> at com.macys.test.test_drools.RuleRunner.loadExcelRules(RuleRunner.java:161)
> at com.macys.test.test_drools.RuleRunner.loadRules(RuleRunner.java:53)
> at com.macys.test.test_drools.RuleRunner.runStatelessRules(RuleRunner.java:217)
> at com.macys.test.rules.engine.AttribDecisionTbl.main(AttribDecisionTbl.java:99)
>
>
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