https://community.cloudera.com/t5/Support-Questions/Can-we-use-tez-as-the-execution-engine-in-the-HDPCD-Exam/m-p/111162#M74010 <P>Yes - you can run the scripts however you like. Keep in mind there may be a task that requires you to use Tez. But if nothing is mentioned specifically in the task instructions, then you can run your Pig and Hive scripts using Tez or not. I would recommend using Tez though for every task when applicable. Like you said - why waste precious exam time.</P><P>I will take offense to the "weak machine" comment. The instances we use are extremely large for the small amount of processing that happens on them - c3.4xlarge EC2 instances. The datasets on the exam are purposely small so that time is not wasted in processing a lot of data. The longest queries you run will take less than 90 seconds, and that is w/out using Tez.</P> Tue, 31 May 2016 23:39:36 GMT rich1 2016-05-31T23:39:36Z https://community.cloudera.com/t5/Support-Questions/Can-we-use-tez-as-the-execution-engine-in-the-HDPCD-Exam/m-p/111161#M74009 <P>When running a pig script or hive query in the HDPCD exam can we use tez rather than mapreduce as the execution engine? Given that the exam is hosted on a single node cluser on a rather weak machine and there is a 2 hour time limit to complete 7-10 task this could save time in the execution of scripts/queries especially considering the results of the exam are exclusively based on the output of our scripts.</P> Tue, 31 May 2016 22:26:25 GMT https://community.cloudera.com/t5/Support-Questions/Can-we-use-tez-as-the-execution-engine-in-the-HDPCD-Exam/m-p/111161#M74009 mehtaparas77 2016-05-31T22:26:25Z https://community.cloudera.com/t5/Support-Questions/Can-we-use-tez-as-the-execution-engine-in-the-HDPCD-Exam/m-p/111162#M74010 <P>Yes - you can run the scripts however you like. Keep in mind there may be a task that requires you to use Tez. But if nothing is mentioned specifically in the task instructions, then you can run your Pig and Hive scripts using Tez or not. I would recommend using Tez though for every task when applicable. Like you said - why waste precious exam time.</P><P>I will take offense to the "weak machine" comment. The instances we use are extremely large for the small amount of processing that happens on them - c3.4xlarge EC2 instances. The datasets on the exam are purposely small so that time is not wasted in processing a lot of data. The longest queries you run will take less than 90 seconds, and that is w/out using Tez.</P> Tue, 31 May 2016 23:39:36 GMT https://community.cloudera.com/t5/Support-Questions/Can-we-use-tez-as-the-execution-engine-in-the-HDPCD-Exam/m-p/111162#M74010 rich1 2016-05-31T23:39:36Z