@Vidya SK - each task on the HDPCD exam is worth 1 point and it is either correct or wrong. There is no partial credit. If a task has subtasks - the entire task is still worth 1 point. Keep in mind the practice exam is meant to get you familiar with the environment, and to also give you an idea of the types of tasks on the real exam, but it is not perfectly exactly reflective of the real exam. For example, in the practice exam all the tasks depend on each other, while on the real exam the tasks are completely independent. To fully prepare for the HDPCD exam, you should be able to complete all of the exam objectives listed on our website. That should be your main focus while preparing and studying for the exam. ... View more

Neeraj - I followed the original article and having some issue. I noticed that once I add the group "Public" in ranger policies without adding ip address in policy condition user are able to publish and consumer from any host. This is what i did. HDP Version: HDP-2.3.4.0-3485 -- Enables Kafka plugin in Ranger. -- Restarted Ranger -- Create following policies in Ranger ( see the image ) ( Important : Added group Public left policy condition blank ) -- Logged in to server 21 to Produce and consume message's -- I was able to produce and consume messages from any server . What we want is to secure our Kafka environment through ranger by ip address. I understand that the identity of client user over a non-secure channel is not possible. I followed the following article to secure or Kafka environment. https://cwiki.apache.org/confluence/display/RANGER/Kafka+Plugin#KafkaPlugin-WhydowehavetospecifypublicusergrouponallpoliciesitemscreatedforauthorizingKafkaaccessovernon-securechannel Please let me know what I am missing. ... View more

Hi Neeraj, Allowing read and wright to all users to Poenix SYSTEM tables is not really secure. Is there any solution to avoid it? Thanks Helmi ... View more

This generally occur if one select either wrong OS or OS version while creating cluster in "Launch wizard" ... View more

@Jorge de la peña Have you checked the log files? Btw, if you can upgrade to Spark 1.6.0, then you should do it. ... View more

Hi @Neeraj Sabharwal , thanks...a restart brought back Ambari into life.....right after opening a ticket 😉 ... View more

@vbhoomireddy are you still having issues with this? Can you accept the best answer or provide your own solution? ... View more

Thanks @vshukla Timely news! Got it working now. Kind regards ... View more

@Sai ram See this https://community.hortonworks.com/questions/301/using-nfs-with-ambari-21.html ... View more

Hi @Neeraj Sabharwal why the "Single Node" now is not available ? In my AWS account I can see only 3 image, related to the 3 certification. I mean, with Free tier, I would run the practice exam, but HDP is not running, very slowly. Could you please suggest me an AWS AMI with acceptable performance ? Thanks ... View more