Can you join together these two tables using SQL? What situation have you been that you had a tough time getting through? Create a python script that reads this csv file put it into panda dataframe and without using groupby group column a? Your opinion about mobile banking and how to improve it?
Everything on spark.. Every little basic.. Foundations should be very strong
sql queries, hbase hotspotting, emp queries,avro,csv,pqrquete file format, Hive partitioning etc. all basic expected questions . Google 100 top big data questions, you will find everything.
Types of Sets in Java
Different collections in Java
Different exceptions in Java
Write word count program in MapReduce
Secondary node in Hadoop
data frame ,performance,..
Internal working of Spark especially joins, shuffles, etc. Differences between RDD, dataframe, dataset.
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