Inconsistent job execution state

[fmbenhassine]

As of v0.1, when a job execution is fast enough, the job server cannot find a job execution for the executed job. Here is the exception:

org.springframework.dao.EmptyResultDataAccessException: No entity found for query; nested exception is javax.persistence.NoResultException: No entity found for query
	at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:392) ~[spring-orm-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.orm.hibernate5.HibernateExceptionTranslator.translateExceptionIfPossible(HibernateExceptionTranslator.java:55) ~[spring-orm-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59) ~[spring-tx-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213) ~[spring-tx-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147) ~[spring-tx-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282) ~[spring-tx-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673) ~[spring-aop-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.jeasy.jobs.execution.JobExecutionRepository$$EnhancerBySpringCGLIB$$529c1f6b.findByJobRequestId(<generated>) ~[classes/:na]
	at org.jeasy.jobs.job.JobService.updateJobExecutionAndItsCorrespondingRequest(JobService.java:62) ~[classes/:na]
	at org.jeasy.jobs.job.DefaultJob.call(DefaultJob.java:30) [classes/:na]
	at org.jeasy.jobs.job.DefaultJob.call(DefaultJob.java:9) [classes/:na]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_73]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_73]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_73]
	at java.lang.Thread.run(Thread.java:745) [na:1.8.0_73]
Caused by: javax.persistence.NoResultException: No entity found for query
	at org.hibernate.query.internal.AbstractProducedQuery.getSingleResult(AbstractProducedQuery.java:1465) ~[hibernate-core-5.2.10.Final.jar:5.2.10.Final]
	at org.jeasy.jobs.execution.JobExecutionRepository.findByJobRequestId(JobExecutionRepository.java:25) ~[classes/:na]
	at org.jeasy.jobs.execution.JobExecutionRepository$$FastClassBySpringCGLIB$$2068fec7.invoke(<generated>) ~[classes/:na]
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738) ~[spring-aop-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.3.9.RELEASE.jar:4.3.9.RELEASE]
	... 14 common frames omitted