Hi Gimantha, HA is enabled in event-processor.xml correctly and all artifacts are deployed on both servers. This happens the other way round too when the inactive node is made the master. I had a debug session with Tishan and identified that the below error is logged recursively on the inactive node every time.
java.util.NoSuchElementException at java.util.AbstractQueue.remove(AbstractQueue.java:117) at org.wso2.carbon.event.publisher.core.internal.BlockingEventQueue.remove(BlockingEventQueue.java:144) at org.wso2.carbon.event.publisher.core.internal.EventPublisher.sendEvent(EventPublisher.java:246) at org.wso2.carbon.event.publisher.core.internal.EventPublisher.onEvent(EventPublisher.java:294) at org.wso2.carbon.event.stream.core.internal.EventJunction.sendEvent(EventJunction.java:157) at org.wso2.carbon.event.receiver.core.internal.management.QueueInputEventDispatcher$QueueInputEventDispatcherWorker.run(QueueInputEventDispatcher.java:142) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:748) Thanks, On Wed, Jun 14, 2017 at 7:13 PM, Gimantha Bandara <giman...@wso2.com> wrote: > Hi Gayan, > Is HA enabled in event-processor.xml? Also is pageVisitsReceiver receiver > deployed in both servers? > On Wed, Jun 14, 2017 at 4:34 PM Gayan Yalpathwala <gay...@wso2.com> wrote: > >> Hi team, >> >> I have configured a DAS 3.1.0 minimum HA setup as per >> https://docs.wso2.com/display/CLUSTER44x/Minimum+ >> High+Availability+Deployment+-+DAS+3.1.0. >> Please note that all analytics datasources are pointed to an HBase >> cluster. I am publishing a large number of events to both the nodes >> (client-side load balanced) from an ESB proxy service using PublishEvent >> mediator. Here, I observed on DAS end, exactly half of the events are not >> getting persisted and below error is thrown multiple times on DAS master >> node. >> >> TID: [-1234] [] [2017-06-14 09:32:49,673] ERROR {org.wso2.carbon.event. >> processor.manager.core.internal.EventHandler} - Unable to process >> events for tenant :-1234 on stream:/Receiver/PageVisitsReceiver >> {org.wso2.carbon.event.processor.manager.core.internal.EventHandler} >> java.lang.NullPointerException >> at org.wso2.carbon.event.receiver.core.internal.management. >> QueueInputEventDispatcher.process(QueueInputEventDispatcher.java:102) >> at org.wso2.carbon.event.processor.manager.core.internal.EventHandler$1. >> receive(EventHandler.java:161) >> at org.wso2.carbon.event.processor.manager.commons.transport.server. >> TCPEventServer$ServerWorker$ListenerProcessor.run( >> TCPEventServer.java:234) >> at java.util.concurrent.ThreadPoolExecutor.runWorker( >> ThreadPoolExecutor.java:1142) >> at java.util.concurrent.ThreadPoolExecutor$Worker.run( >> ThreadPoolExecutor.java:617) >> at java.lang.Thread.run(Thread.java:748) >> >> Any thoughts on this behavior? >> >> Thanks, >> >> -- >> *Gayan Kaushalya Yalpathwala* >> Senior Software Engineer >> WSO2 Inc.; http://wso2.com >> lean.enterprise.middleware >> >> LK: +94 71 868 2704 <071%20868%202704> >> US: +1 650 695 2324 <+1%20650-695-2324> >> >> <http://asia14.wso2con.com/> >> > -- > Gimantha Bandara > Software Engineer > WSO2. Inc : http://wso2.com > Mobile : +94714961919 <071%20496%201919> > -- *Gayan Kaushalya Yalpathwala* Senior Software Engineer WSO2 Inc.; http://wso2.com lean.enterprise.middleware LK: +94 71 868 2704 US: +1 650 695 2324 <http://asia14.wso2con.com/>
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