Hi Folks, I used helix task framework to run several workflows and restarted the participant that held the implemented tasks. Most of the cases in restarts, Helix catches up and continue with last Task but In some cases it prints following error on Controller log and Workflow stops working upon that point. What could be the reason for that? I'm using Helix 0.6.7 version.
2018-04-06 15:10:57,766 [Thread-3] ERROR o.a.h.c.s.BestPossibleStateCalcStage - Error computing assignment for resource Workflow_of_process_PROCESS_7f6c8a54-b50f-4bdb-aafd-59ce87276527-POST-b5e39e07-2d8e-4309-be5a-f5b6067f9a24_TASK_cc8039e5-f054-4dea-8c7f-07c98077b117. Skipping. java.lang.NullPointerException: Name is null at java.lang.Enum.valueOf(Enum.java:236) at org.apache.helix.task.TaskPartitionState.valueOf(TaskPartitionState.java:25) at org.apache.helix.task.JobRebalancer.computeResourceMapping(JobRebalancer.java:272) at org.apache.helix.task.JobRebalancer.computeBestPossiblePartitionState(JobRebalancer.java:140) at org.apache.helix.controller.stages.BestPossibleStateCalcStage.compute(BestPossibleStateCalcStage.java:171) at org.apache.helix.controller.stages.BestPossibleStateCalcStage.process(BestPossibleStateCalcStage.java:66) at org.apache.helix.controller.pipeline.Pipeline.handle(Pipeline.java:48) at org.apache.helix.controller.GenericHelixController.handleEvent(GenericHelixController.java:295) at org.apache.helix.controller.GenericHelixController$ClusterEventProcessor.run(GenericHelixController.java:595) 2018-04-06 15:11:00,385 [Thread-3] ERROR o.a.h.c.s.BestPossibleStateCalcStage - Error computing assignment for resource Workflow_of_process_PROCESS_2b69b499-c527-4c9d-8b2b-db17366f5f81-POST-c67607ae-9177-4a02-af8a-8b3751eea4ff_TASK_1ea6876d-f2ec-4139-a15d-0e64a80a3025. Skipping. Thanks Dimuthu