@Arkaprova Saha It depends on you feel about yourself and your future. If you consider yourself a software engineer that has solid Java background and wants to deliver highly optimized and scalable software products based on Spark then you may want to focus more on Scala. If you are more focused on data wrangling, discovery and analysis, short-term use focused studies, or to resolve business problems as quick as possible then Python is awesome. Python has such a large community and code snippets, applications etc. Don't get me wrong, but Python could also be used to deliver enterprise-level applications, but it is more often to use Java and Scala for highly optimized. Python has some culprits, which we will not debate here. Anyhow, I would say that Python is kind of a MUST HAVE and Scala is NICE TO HAVE. Obviously, this is my 2c and I would be amazed that any of these responses in this thread is the ANSWER. ... View more

LinkedIn article is an old article. Kafka documentaion recommends G1 collector. http://kafka.apache.org/documentation.html#java ... View more

@Constantin Stanca Hi Constantin, The issue was that a hadoop folder got created previously under /usr/hdp folder since there should be only 2 folders named 2.4.2.0-258 and current under /usr/hdp. There should not be any additional folders apart from two folders. After removing the hadoop folder from /usr/hdp, the issue got resolved. Thanks, Rahul ... View more