Vxider opened a new issue #3242: com.twitter.heron.streamlet.impl.sources.ComplexSource cannot be cast to org.apache.heron.api.spout.ISpout URL: https://github.com/apache/incubator-heron/issues/3242 I have encountered an exception when using implementing 'custom source' followed by "SimplePulsarSourceTopology" in example. Here is the exception log: ``` java.lang.ClassCastException: com.twitter.heron.streamlet.impl.sources.ComplexSource cannot be cast to org.apache.heron.api.spout.ISpout at org.apache.heron.instance.spout.SpoutInstance.<init>(SpoutInstance.java:121) at org.apache.heron.instance.Slave.handleNewAssignment(Slave.java:154) at org.apache.heron.instance.Slave.handleNewPhysicalPlan(Slave.java:364) at org.apache.heron.instance.Slave.access$300(Slave.java:55) at org.apache.heron.instance.Slave$1.run(Slave.java:124) at org.apache.heron.common.basics.WakeableLooper.executeTasksOnWakeup(WakeableLooper.java:191) at org.apache.heron.common.basics.WakeableLooper.runOnce(WakeableLooper.java:110) at org.apache.heron.common.basics.WakeableLooper.loop(WakeableLooper.java:100) at org.apache.heron.instance.Slave.run(Slave.java:186) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) ``` Is this error caused by the difference between the Heron application(org.apache.xxx) and the maven API(com.twitter.xxx) package name?
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