> NPE while try to release a service semaphore which does not acquire any lock
> ----------------------------------------------------------------------------
>
> Key: OFBIZ-5625
> URL:
https://issues.apache.org/jira/browse/OFBIZ-5625> Project: OFBiz
> Issue Type: Bug
> Components: framework
> Affects Versions: SVN trunk
> Reporter: Leon
> Fix For: SVN trunk
>
> Attachments: OFBIZ-5625.patch
>
>
> Set a service attribution "semaphore" to "fail" and try to run it twice in short delay. Since the first one obtains the lock, the second will "fail" and throws out the "SemaphoreFailException" exception which will be catch in ServiceDispatcher.runSync method and triggers the semophore.release within that the NPE occurred because of null lock value.
> {quote}
> 2014-04-28 12:50:35,560 (OFBiz-JobQueue-1) [ GenericServiceJob.java:118:ERROR]
> ---- runtime exception report --------------------------------------------------
> Async-Service failed.
> Exception: java.lang.NullPointerException
> Message: null
> ---- stack trace ---------------------------------------------------------------
> java.lang.NullPointerException
> org.ofbiz.service.semaphore.ServiceSemaphore.dbWrite(ServiceSemaphore.java:155)
> org.ofbiz.service.semaphore.ServiceSemaphore.release(ServiceSemaphore.java:75)
> org.ofbiz.service.ServiceDispatcher.runSync(ServiceDispatcher.java:557)
> org.ofbiz.service.ServiceDispatcher.runSync(ServiceDispatcher.java:218)
> org.ofbiz.service.GenericDispatcherFactory$GenericDispatcher.runSync(GenericDispatcherFactory.java:83)
> org.ofbiz.service.job.GenericServiceJob.exec(GenericServiceJob.java:69)
> org.ofbiz.service.job.AbstractJob.run(AbstractJob.java:87)
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> java.lang.Thread.run(Thread.java:619)
> --------------------------------------------------------------------------------
> {quote}
Locked
