Let me make a comment for anyone reading this who is attempting the practice exam: mysqld is already running on the namenode and you do not need to start it. If you want to connect to mysql, follow the instructions I provided below. It is possible that mysqld may have stopped, but very unlikely. If you are having problems with the Sqoop tasks, make sure your connection URL is correct. Look in /home/horton/solutions for the correct URL. ... View more

Send me the public dns of your instance. Email it to certification@hortonworks.com. I'll take a look ... View more

What errors are you getting? And what is the command you are using to run the code? Perhaps you could share your code also. Thanks. ... View more

No worries. I am just trying to make it clear for anyone in the future who is preparing for our exams. The HCatLoader and HCatStorer classes have different package names, so the subject of this post is misleading and has nothing to do with missing JAR files. If you use the correct class name then everything works fine. ... View more

That issue with Ambari has nothing to do with the environment of the practice exam. The package name for HCatLoader and HCatStorer changed in HDP 2.0. Using the proper class name (shown above) is the answer to this question. ... View more

Yes - restart the ambari-agent and then run start_all_services.sh. Let me know if that fixes the issue. If not, I can login to your instance and see what the issue is. ... View more

Are you talking about running a Pig UDF written in Python? You need to make sure you are using streaming_python instead of jython. What does your REGISTER command look like? ... View more

If you do an "INSERT OVERWRITE" then all the files in the table's LOCATION will be deleted and replaced with the new data. ... View more