1st round: HackerRank.

Few MCQs on HBase, Spark, Hive, SQL, and Unix scripting.

One easy program on arrays.

2nd round: F2F technical round.

Topics covered: Java, algorithms, data structures, Unix script, SQL.

3rd round: Technical round.

Topics covered: Spark, Java, questions from projects in the resume.

Different ways to implement singleton.

Comparable vs. Comparator.

Questions on HashMap implementation.

WAP to find anagrams with complexity.

WAP to rotate a linked list with complexity.

WAP suitable to sort this array: arr[1, 0, 1, 1, 0, 1, 0].

Difference between SQLContext and HiveContext.

Spark features.

Find 0-size files in Unix.

Count the number of files in a directory in Unix.

Simple SQL queries to join two tables.