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
US: +1 650 695 2324
<http://asia14.wso2con.com/>
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