I have an EJB call from client side like this:
Portfolio[] ptfTab = ServicesMgr.getInstance().getPortfolioService().getPortfolios();
getPortfolioService() returns an instance of PortfolioFinderDelegate (EJB client interface). The EJB service from client side has this signature:
public interface PortfolioFinder extends IBasic {
Portfolio[] getPortfolios();
}
For the EJB on server side, the implementation of the method is:
public Portfolio[] getPortfolios() {
List<Portfolio> portfolioList = getPortfoliosAsList();
return portfolioList.toArray(new Portfolio[portfolioList.size()]);
}
The method getPortfolioAsList() is a private method:
private List<Portfolio> getPortfoliosAsList() {
List<Portfolio> portfolioList = new ArrayList<Portfolio>();
LOCK.readLock().lock();
try {
List<String> keys = portfolioCache.getKeys();
for (Iterator<String> iterator = keys.iterator(); iterator.hasNext();)
{
String codeport = iterator.next();
Set<Portfolio> s =(Set<Portfolio>) portfolioCache.get(codeport) .getValue();
portfolioList.addAll(s);
}
} catch (Throwable e) {
LOGGER.error(e.getMessage(), e);
} finally {
LOCK.readLock().unlock();
}
return portfolioList;
}
Yesterday, I got a strange stack trace like this, I have never encountered it before and I am sure the portfolio cache on server side is not empty. Besides, there is no error log on server side. When the first client encounters this error, all the client have it then. Is this issue related to the size of the returned object? (because the cache size is increasing every day) Is there a limit of object size when data are serialized and deserialized through EJB?
2019-02-26 14:51:35 ERROR [StartupMgr][EJBPortfolioMgr.java:57] : Error while sending a request
javax.ejb.EJBException: Error while sending a request
at org.ow2.easybeans.proxy.client.ClientRPCInvocationHandler.invoke(ClientRPCInvocationHandler.java:205)
at org.ow2.easybeans.proxy.client.ClientRPCInvocationHandler.invoke(ClientRPCInvocationHandler.java:117)
at com.sun.proxy.$Proxy33.getPortfolios(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.clam.mediaplus.client.services.ProxyRemoteObject.invoke(ProxyRemoteObject.java:87)
at com.sun.proxy.$Proxy33.getPortfolios(Unknown Source)
at client.delegate.common.PortfolioFinderDelegate.getPortfolios(PortfolioFinderDelegate.java:46)
at com.casits.rambo.dao.portfolio.EJBPortfolioMgr.reload(EJBPortfolioMgr.java:42)
at com.casits.rambo.dao.portfolio.AbstractPortfolioMgr.<init>(AbstractPortfolioMgr.java:24)
at com.casits.rambo.dao.portfolio.EJBPortfolioMgr.<init>(EJBPortfolioMgr.java:31)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:126)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:72)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:948)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:901)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at com.casits.rambo.dao.common.CommonBeanFactory.getPortfolioMgr(CommonBeanFactory.java:54)
at com.casits.rambo.dao.portfolio.PortfolioMgr.getAttribPortfolio(PortfolioMgr.java:82)
at com.casits.rambo.dao.portfolio.PortfolioMgr.getAttribPortfolio(PortfolioMgr.java:151)
at com.casits.rambo.dao.portfolio.PortfolioMgr$2.processRow(PortfolioMgr.java:217)
at org.springframework.jdbc.core.JdbcTemplate$RowCallbackHandlerResultSetExtractor.extractData(JdbcTemplate.java:1408)
at org.springframework.jdbc.core.JdbcTemplate$1QueryStatementCallback.doInStatement(JdbcTemplate.java:445)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:395)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:455)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:459)
at com.casits.rambo.dao.portfolio.PortfolioMgr.getAllAttribPortfolios(PortfolioMgr.java:207)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.getAllAttribCodeports(RefPortfolioMgr.java:257)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.refreshAttribCodeports(RefPortfolioMgr.java:243)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.init(RefPortfolioMgr.java:221)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.<init>(RefPortfolioMgr.java:239)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.<clinit>(RefPortfolioMgr.java:191)
at com.casits.attrib.refptf.RefPtfModule.init(RefPtfModule.java:80)
at com.casits.attrib.attribcommon.AbstractModule.load(AbstractModule.java:70)
at com.casits.attrib.main.MainJFrame.executeEnableModule(MainJFrame.java:418)
at com.casits.attrib.main.MainJFrame.addModule(MainJFrame.java:336)
at com.casits.attrib.main.MainGUI.createAndShowGUI(MainGUI.java:80)
at com.casits.attrib.main.StartupMgr.init(StartupMgr.java:82)
at com.casits.attrib.attribcommon.manager.AttribUserMgr$1.run(AttribUserMgr.java:390)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Error while handling answer on the remote side
at org.ow2.easybeans.rpc.rmi.client.RMIClientRPC.sendEJBRequest(RMIClientRPC.java:116)
at org.ow2.easybeans.proxy.client.ClientRPCInvocationHandler.invoke(ClientRPCInvocationHandler.java:202)
... 49 more
Caused by: java.rmi.UnmarshalException: IOException unmarshalling returnjava.io.OptionalDataException; nested exception is:
java.io.OptionalDataException
at org.ow2.carol.rmi.jrmp.server.JUnicastRef.performRemoteCall(JUnicastRef.java:212)
at org.ow2.carol.rmi.jrmp.server.JUnicastRef.invoke(JUnicastRef.java:161)
at org.ow2.easybeans.rpc.rmi.server.RMIServerRPCImpl_Stub.getEJBResponse(RMIServerRPCImpl_Stub.java:60)
at org.ow2.easybeans.rpc.rmi.client.RMIClientRPC.sendEJBRequest(RMIClientRPC.java:114)
... 50 more
Caused by: java.io.OptionalDataException
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1370)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1179)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1180)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1180)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1180)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1180)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:325)
at org.ow2.carol.rmi.jrmp.server.JUnicastRef.performRemoteCall(JUnicastRef.java:205)
... 53 more
