Tomcat not giving response. it is hanging with memory issue

Subhash Gaddampally

no llegida,

18 de des. 2016, 23:24:4918/12/16

a Drools Setup

Hi all,

I have multiple war files for different projects to fire rules with respect to their projects.

In each request, i am passing output of one guided decision table to another guided decision table as a input.

for that, i am creating new session every time and not disposing.

is it the root cause of below issues i find in tomcat logs? is there any other issue?

03-Dec-2016 02:15:55.907 SEVERE [ajp-nio-8009-ClientPoller-0] org.apache.tomcat.util.net.NioEndpoint$Poller.run

java.lang.OutOfMemoryError: GC overhead limit exceeded

03-Dec-2016 02:15:57.591 SEVERE [ajp-nio-8009-ClientPoller-1] org.apache.tomcat.util.net.NioEndpoint$Poller.run

java.lang.OutOfMemoryError: Java heap space

Thanks,

Subhash.

Maciej Swiderski

no llegida,

19 de des. 2016, 2:41:3519/12/16

a drools...@googlegroups.com

yes, since you're not disposing your ksession it will grow an eventually ran out of memory.

Maciej

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Subhash Gaddampally

no llegida,

19 de des. 2016, 4:25:0519/12/16

a Drools Setup

Thanks Maciej for help. I will dispose ksession every time.

Subhash Gaddampally

no llegida,

19 de des. 2016, 23:47:4119/12/16

a Drools Setup

Hi maciej,

i am disposing kie session multiple times in each request based on requirements.what about kie container for every request?

presently i am creating kie container at once per each request.creating kie sessions with that container.

is there any way to clear container after every request. is it necessary to this procedure?

Thanks,

Subhash.

On Monday, December 19, 2016 at 9:54:49 AM UTC+5:30, Subhash Gaddampally wrote:

Subhash Gaddampally

no llegida,

22 de des. 2016, 0:27:4522/12/16

a Drools Setup

i am getting below error loading rules sometimes. i want know minimum hardware configurations for drools setup

On Monday, December 19, 2016 at 9:54:49 AM UTC+5:30, Subhash Gaddampally wrote:

Subhash Gaddampally

no llegida,

26 de des. 2016, 2:25:5726/12/16

a Drools Setup

i am getting this error in logs after disposing kie sessions also in every request.

24-Dec-2016 05:28:51.539 SEVERE [http-nio-8080-ClientPoller-1] org.apache.tomcat.util.net.NioEndpoint$Poller.run

java.lang.OutOfMemoryError: Java heap space

after restarting tomcat server. its working fine.but getting below error. can you help me on this. i am struggling on this issue from past 5 days

[http-nio-8080-exec-6] ERROR org.kie.scanner.embedder.MavenEmbedder - Unable to build MavenEmbedder

org.codehaus.plexus.component.repository.exception.ComponentLookupException: java.util.NoSuchElementException

role: org.apache.maven.execution.MavenExecutionRequestPopulator

roleHint:

at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:267)

at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:255)

at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:249)

at org.kie.scanner.embedder.PlexusComponentProvider.lookup(PlexusComponentProvider.java:42)

at org.kie.scanner.embedder.MavenEmbedder.buildMavenExecutionRequest(MavenEmbedder.java:119)

at org.kie.scanner.embedder.MavenEmbedder.<init>(MavenEmbedder.java:90)

at org.kie.scanner.embedder.MavenEmbedder.<init>(MavenEmbedder.java:81)

at org.kie.scanner.embedder.MavenEmbedder.<init>(MavenEmbedder.java:75)

at org.kie.scanner.embedder.MavenProjectLoader.newMavenEmbedder(MavenProjectLoader.java:66)

at org.kie.scanner.embedder.MavenProjectLoader.parseMavenPom(MavenProjectLoader.java:53)

at org.kie.scanner.embedder.MavenProjectLoader.parseMavenPom(MavenProjectLoader.java:49)

at org.kie.scanner.MavenPomModelGenerator.parse(MavenPomModelGenerator.java:33)

at org.drools.compiler.kproject.xml.PomModel$Parser.parse(PomModel.java:110)

at org.drools.compiler.kie.builder.impl.AbstractKieModule.getPomModel(AbstractKieModule.java:427)

at org.drools.compiler.kie.builder.impl.AbstractKieModule.getJarDependencies(AbstractKieModule.java:129)

at org.kie.scanner.MavenClassLoaderResolver.getClassLoader(MavenClassLoaderResolver.java:65)

at org.drools.compiler.kie.builder.impl.KieModuleKieProject.<init>(KieModuleKieProject.java:68)

at org.drools.compiler.kie.builder.impl.KieModuleKieProject.<init>(KieModuleKieProject.java:56)

at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildKieModule(KieBuilderImpl.java:222)

at org.kie.scanner.KieRepositoryScannerImpl.build(KieRepositoryScannerImpl.java:221)

at org.kie.scanner.KieRepositoryScannerImpl.buildArtifact(KieRepositoryScannerImpl.java:171)

at org.kie.scanner.KieRepositoryScannerImpl.loadArtifact(KieRepositoryScannerImpl.java:127)

at org.kie.scanner.KieRepositoryScannerImpl.loadArtifact(KieRepositoryScannerImpl.java:122)

at org.drools.compiler.kie.builder.impl.KieRepositoryImpl.loadKieModuleFromMavenRepo(KieRepositoryImpl.java:130)

at org.drools.compiler.kie.builder.impl.KieRepositoryImpl.getKieModule(KieRepositoryImpl.java:116)

at org.drools.compiler.kie.builder.impl.KieRepositoryImpl.getKieModule(KieRepositoryImpl.java:93)

at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:115)

at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:111)

at com.sample.sa.rules.fire.FireSampleRules.createKieContainer(FireSampleRules.java:41)

at com.sample.sa.rules.fire.FireSampleRules.fireTestRules(FireSampleRules.java:69)

at com.sample.sa.rules.controllers.SAController.getSensorAlert(SAController.java:42)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:497)

at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731)

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)

at org.kie.integration.tomcat.JACCValve.invoke(JACCValve.java:101)

at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1099)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:670)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:745)

Caused by: java.util.NoSuchElementException

at org.eclipse.sisu.inject.LocatedBeans$Itr.next(LocatedBeans.java:141)

at org.eclipse.sisu.inject.LocatedBeans$Itr.next(LocatedBeans.java:1)

at org.eclipse.sisu.plexus.DefaultPlexusBeans$Itr.next(DefaultPlexusBeans.java:76)

at org.eclipse.sisu.plexus.DefaultPlexusBeans$Itr.next(DefaultPlexusBeans.java:1)

at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:263)

... 69 more

[http-nio-8080-exec-6] ERROR org.kie.api.builder.KieScanner - Unable to create new MavenEmbedder

org.kie.scanner.embedder.MavenEmbedderException: java.util.NoSuchElementException

role: org.apache.maven.execution.MavenExecutionRequestPopulator

roleHint:

at org.kie.scanner.embedder.MavenEmbedder.<init>(MavenEmbedder.java:102)