java.lang.OutOfMemoryError: Java heap space

[Ashish101]

Hi,

I got MeasureAuthoringTool_Release,MeasureAuthoringTool_LatestSprint running on eclipse IDE. Measures with less number of clauses(4-5) can be created containing VSAC elements. Measure are packaged and successfully exported for measures with less data.

But the problem occurs, If I try to create measure Measure_1 and provide 8 VSAC elements with more than 7 clauses. I am trying to make measure as shown in below Measure Image -

When I switch the tab from Population Workspace to MeasurePackager following error occurs-

java.lang.OutOfMemoryError: Java heap space

I have provided heap space -Xmx=512M. Even if I try to provide more heap space 1024M, It provides same error.

Same error appears when I try to open existing measure Measure_1 (which was partially created).

14:52:04,044  INFO btpool0-3 server.MeasureLibraryServiceImpl:638 - In MeasureLibraryServiceImpl.convertXmltoModel()
14:52:04,044  INFO btpool0-3 util.XmlProcessor:288 - In XmlProcessor() constructor
14:52:04,449  INFO btpool0-3 util.XmlProcessor:296 - Document Object created successfully for the XML String
14:52:04,449  INFO btpool0-3 util.XmlProcessor:481 - In transform() method
14:52:05,339  INFO btpool0-3 util.XmlProcessor:495 - Document object to ByteArray transformation complete
   [ERROR] Exception while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract mat.client.measure.ManageMeasureDetailModel 

mat.client.measure.service.MeasureService.getMeasureAndLogRecentMeasure(java.lang.String,java.lang.String)' threw an unexpected exception: java.lang.OutOfMemoryError: 

Java heap space
    at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:389)
    at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:579)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
    at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1097)
    at mat.server.PreventCachingFilter.doFilter(PreventCachingFilter.java:88)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
    at mat.server.HibernateStatisticsFilter.doFilter(HibernateStatisticsFilter.java:60)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:343)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:97)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:100)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:78)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:35)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:187)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:79)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:109)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:355)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:149)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:324)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
Caused by: java.lang.OutOfMemoryError: Java heap space
    at java.lang.StringCoding$StringDecoder.decode(Unknown Source)
    at java.lang.StringCoding.decode(Unknown Source)
    at java.lang.StringCoding.decode(Unknown Source)
    at java.lang.String.<init>(Unknown Source)
    at java.io.ByteArrayOutputStream.toString(Unknown Source)
    at mat.server.util.XmlProcessor.transform(XmlProcessor.java:496)
    at mat.server.util.XmlProcessor.getXmlByTagName(XmlProcessor.java:530)
    at mat.server.MeasureLibraryServiceImpl.convertXmltoModel(MeasureLibraryServiceImpl.java:642)
    at mat.server.MeasureLibraryServiceImpl.getMeasure(MeasureLibraryServiceImpl.java:1290)
    at mat.server.MeasureServiceImpl.getMeasure(MeasureServiceImpl.java:119)
    at mat.server.MeasureServiceImpl.getMeasureAndLogRecentMeasure(MeasureServiceImpl.java:127)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:561)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
    at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
    at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1097)
    at mat.server.PreventCachingFilter.doFilter(PreventCachingFilter.java:88)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
    at mat.server.HibernateStatisticsFilter.doFilter(HibernateStatisticsFilter.java:60)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:343)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
      [ERROR] Out of memory; to increase the amount of memory, use the -Xmx flag at startup (java -Xmx128M ...)
[ERROR] 500 - POST /mat/measureLibrary (127.0.0.1) 57 bytes

My concern is why it requires so much memory to run. Is there any way to overcome this situation.
Any help related to this will be appreciated!!!
Thanks.

[MATProjectUser]

Hi Ashish,

I normally create measures which are more complex and with more number of VSAC elements in MAT and haven't seen any memory issues.
Can you tell me what version of Java and Eclipse you are using...also can you check if your eclipse and jdk both are 32 bit/64 bit. I remember some people having memory issues running MAT through Eclipse with Eclipse being 64 bit and Java as 32 bit or vice versa.

Thanks.

[Ashish101]

Hi MAT Team,

"Java.lang.OutOfMemoryError: Java heap space" issue got resolved.

1. I reinstalled the eclipse/jdk 64-bit versions.
2. There were garbage values in the blob for measure_xml table. So, deleted those entries from the database.

After that everything just worked fine. Measure was created successfully.

Thanks for the help!!!