Hi Mohan, Thanks a lot. I'm having lunch at the moment. Shall we meet after lunch? Btw cep is deployed in an EC2 instance, so i'm not sure whether we can remote debug. :(
Gayashan Amarasinghe (sent from mobile) On 18 Jun 2014 12:20, "Mohanadarshan Vivekanandalingam" <[email protected]> wrote: > Hi Gayashan, > > Can you meet me Now.. We'll debug and see what went wrong.. > > Thanks, > Mohan > > > > On Wed, Jun 18, 2014 at 12:06 PM, Gayashan Amarasinghe <[email protected]> > wrote: > >> Hi all, >> >> I've been using the CEP to do some time batch processing with a query >> similar to this, >> >> from in_stream#window.timeBatch(5 min) >> select var1, avg(var2) as avg, count(*) as frequency >> group by var1 having frequency > 2 >> insert into out_stream; >> >> And then log the contents of the out stream using an Event formatter. >> >> It works as expected most of the time, however every now and then i keep >> getting the following error. Any idea why I'm getting this error? >> >> TID: [0] [CEP] [2014-06-17 23:18:48,706] ERROR >> {org.wso2.carbon.event.stream.manager.core.internal.stream.EventJunction} >> - Error while dispatching events >> java.lang.NullPointerException >> at >> org.wso2.carbon.event.stream.manager.core.internal.stream.EventJunction.sendEvents(EventJunction.java:225) >> at >> org.wso2.carbon.event.processor.core.internal.listener.SiddhiOutputStreamListener.receive(SiddhiOutputStreamListener.java:78) >> at >> org.wso2.siddhi.core.stream.output.StreamCallback.send(StreamCallback.java:83) >> at >> org.wso2.siddhi.core.stream.output.StreamCallback.receive(StreamCallback.java:56) >> at >> org.wso2.siddhi.core.stream.StreamJunction.send(StreamJunction.java:45) >> at >> org.wso2.siddhi.core.query.output.callback.InsertIntoStreamCallback.send(InsertIntoStreamCallback.java:35) >> at >> org.wso2.siddhi.core.query.output.ratelimit.OutputRateManager.sendToCallBacks(OutputRateManager.java:38) >> at >> org.wso2.siddhi.core.query.output.ratelimit.PassThroughOutputRateManager.send(PassThroughOutputRateManager.java:26) >> at >> org.wso2.siddhi.core.query.selector.QuerySelector.sendEvents(QuerySelector.java:340) >> at >> org.wso2.siddhi.core.query.selector.QuerySelector.process(QuerySelector.java:301) >> at >> org.wso2.siddhi.core.query.processor.window.TimeBatchWindowProcessor.run(TimeBatchWindowProcessor.java:113) >> at >> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) >> at java.util.concurrent.FutureTask.run(FutureTask.java:262) >> at >> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) >> at >> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) >> at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> at java.lang.Thread.run(Thread.java:744) >> >> Any help is much appreciated. >> >> Thanks. >> >> /Gayashan >> >> >> -- >> Gayashan Amarasinghe >> Software Engineer >> WSO2, Inc. ; http://wso2.com >> lean. enterprise. middleware >> >> Mobile: +94718314517 >> Blog: gayashan-a.blogspot.com >> >> _______________________________________________ >> Dev mailing list >> [email protected] >> http://wso2.org/cgi-bin/mailman/listinfo/dev >> >> > > > -- > *V. Mohanadarshan* > *Software Engineer,* > *Data Technologies Team,* > *WSO2, Inc. http://wso2.com <http://wso2.com> * > *lean.enterprise.middleware.* > > email: [email protected] > phone:(+94) 771117673 >
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