Dashboard crashes after a day of operation

[kasunbg]

Description:
The dashboard keeps crashing after a day of operation. Following error log was observed in logs. We need to upgrade eclipselink jpa library.

05:26:21.444 [https-jsse-nio-8443-exec-6] ERROR org.wso2.testgrid.web.api.ProductService - Error occurred while fetching the Product statuses 
org.wso2.testgrid.dao.TestGridDAOException: Error occurred when searching for entity.
	at org.wso2.testgrid.dao.repository.AbstractRepository.findAll(AbstractRepository.java:165) ~[org.wso2.testgrid.dao-1.0.5-SNAPSHOT.jar:1.0.5-SNAPSHOT]
	at org.wso2.testgrid.dao.repository.ProductRepository.findAll(ProductRepository.java:104) ~[org.wso2.testgrid.dao-1.0.5-SNAPSHOT.jar:1.0.5-SNAPSHOT]
	at org.wso2.testgrid.dao.uow.ProductUOW.getProducts(ProductUOW.java:82) ~[org.wso2.testgrid.dao-1.0.5-SNAPSHOT.jar:1.0.5-SNAPSHOT]
	at org.wso2.testgrid.web.api.ProductService.getAllProductStatuses(ProductService.java:125) [classes/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_151]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_151]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_151]
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81) [jersey-server-2.22.2.jar:?]
....
Caused by: java.lang.NullPointerException
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeDeferredEvents(AbstractSession.java:1189) ~[org.eclipse.persistence.core-2.2.0.jar:2.2.0.v20110202-r8913]
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2843) ~[org.eclipse.persistence.core-2.2.0.jar:2.2.0.v20110202-r8913]
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1521) ~[org.eclipse.persistence.core-2.2.0.jar:2.2.0.v20110202-r8913]
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1503) ~[org.eclipse.persistence.core-2.2.0.jar:2.2.0.v20110202-r8913]
	at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1477) ~[org.eclipse.persistence.core-2.2.0.jar:2.2.0.v20110202-r8913]
	at org.eclipse.persistence.internal.jpa.EJBQueryImpl.executeReadQuery(EJBQueryImpl.java:484) ~[org.eclipse.persistence.jpa-2.2.0.jar:2.2.0.v20110202-r8913]
	at org.eclipse.persistence.internal.jpa.EJBQueryImpl.getResultList(EJBQueryImpl.java:741) ~[org.eclipse.persistence.jpa-2.2.0.jar:2.2.0.v20110202-r8913]
	at org.wso2.testgrid.dao.repository.AbstractRepository.findAll(AbstractRepository.java:163) ~[org.wso2.testgrid.dao-1.0.5-SNAPSHOT.jar:1.0.5-SNAPSHOT]
	... 54 more

Suggested Labels:

Suggested Assignees:

Affected Product Version:

OS, DB, other environment details and versions:

Steps to reproduce:

Related Issues: