@Mohamed Emad This might be because you made more requests than you should. Twitter API has a call limit. Please see: https://help.twitter.com/en/rules-and-policies/twitter-limits https://developer.twitter.com/en/docs/basics/rate-limits The best way to avoid that is scheduling your GetTwitter to not exceed this limit. ... View more

@ Davy Machado The best way is open a ticket to certification@hortonworks.com, and saying this problem them. I think you should wait a little time before attempt this exam again, to give hortonworks time to have this problem fixed. I've already bought the voucher (HDFCNA) and I'll wait 1 month more to attempt it. Good luck! ... View more

@Geoffrey Shelton Okot It's sad to hear that, cause I scheduled the HDFCNA to next month, now I'll wait for PSI and Hortonworks get this problem solved before my attempt. By the way, I agree with you, Hortonworks has the capacity to negotiate a much better deal with PSI. ... View more

@vishal singh The error says that the Kafka Broker is not available. Did you check if "python" is sending data to Kafka cluster without any error? How did you setup ConsumeKafka Processor? Can you share a print screen? This tutorial might be useful, please take a look https://community.hortonworks.com/content/idea/191847/apache-nifi-apache-kafka-and-s3-tutorial.html ... View more

@Nikhil Vemula I took HDPCA certification exam last year, and I can tell you the key to pass this exam is practice and practice. Before the Exam ( time to get prepared) Take each subject from HDPCA and try to stress very possible scenarios. Hortonworks has a brilliant documentation use them in your preparation. (I used them in my preparation) By the way, you have a Practise exam available to check if you are prepared to take the exam. https://br.hortonworks.com/services/training/certification/hdpca-certification/ During the Exam - Read each question carefully. - You will have 2 hours to finish the exam, this is enough time to do it and still get to check it out. - If you find any questions that you do not know you can use the documentation that is available within the exam environment After the Exam Wait for your results. For more information, please check: https://br.hortonworks.com/services/training/certification/hdp-certified-developer-faq-page/ ... View more