@Ali Bajwa big props for updating Nifi to 0.4.1, can you update the step where you say to navigate to http://sandbox.hortonworks.com:9090/ to http://sandbox.hortonworks.com:9090/nifi?
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@Necip Gengeç +1 on what @Predrag Minovic had said, additionally, I'd login to the node, make sure there are no redundant repositories, if all else fails, clean the cache and retry.
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@narasimha meruva that's a nice workaround, I was going to suggest to run the job as a java action, I believe number of mappers and reducers would depend on the dataset then, not like in your case. Worth a shot.
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@Pradeep Allu out of curiosity, can you remove time: charrarray and value: double and try again. If it works, add value next and if that works, try again with time. If that fails, use a different fieldname for that.
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@Pradeep Allu there's discussion in this thread re: this. Can you cast the field to string perhaps or is it absolutely necessary for you to use timestamp? Can you please paste the pig script.
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