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April 21, 2019

https://www.edureka.co/blog/interview-questions/mysql-interview-questions/

https://www.edureka.co/blog/mysql-tutorial/

https://www.edureka.co/blog/interview-questions/sql-interview-questions

https://www.edureka.co/blog/interview-questions/mysql-interview-questions/

http://www.besttechtools.com/articles/article/sql-query-to-delete-duplicate-rows

https://www.softwaretestinghelp.com/50-popular-sql-interview-questions-for-testers/

https://www.softwaretestingmaterial.com/sql-interview-questions/

https://www.softwaretestinghelp.com/unix-commands/ unix cmds

unix cmds
basics of oracle
row id
removing duplicate records
second highest salary and third highest salary
hadoop basic hadoop commadns
hdfs architechture
of all components
how used in project
spark basics
stroing tmep table
how data is stored
unix

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Interview questions by company wise

August 08, 2019

Interview questions: Amazon link TCS Interview: 1) How you handle duplicates in hive table? 2) What is map side join and what is SMB join? 3) Why we use splitby? 4) How to import/view only schema using sqoop? 5) Diff b/n reduceByKey and groupByKey? 6) Broadcast variables and accumulators? 7) How to add new column to DF? 8) Diff b/n lineage and DAG? 9) Spark job submission command? Round-2: 1) Singleton scala object? 2) Higher order function in scala? 3) How to load data from file having multiple delimiters? 4) Compare orc and parquet 5) DAG and lineage difference? 6) Difference b/n rdd, Df and ds 7) How DS is created from DF and how rdd is converted to DF? Accenture interview: 1) Explain Ur project. 2) How u do incremental import for updating tables in Ur project? 3) DAG and lineage difference. 4) reduceByKey functioning? 5) Spark Architecture. 6) How u export jar in Ur project and what spark libraries u use for creatin...