Big data Interview Questions | Glassdoor.co.in

Big data Interview Questions

359

big data interview questions shared by candidates

Top Interview Questions

Sort: RelevancePopular Date

Advantages of java over c

2 Answers

write a query to find the second maximum.

What coding question they asked out of 5 question??

Difference between delete and truncate in SQL?

2 Answers

Spark : 1. Difference between map and flatmap. 2. Difference between groupbykey and reducebykey 3. Which file format spark saves file ? Answer should be ".orc" files only. (It took me multiple attempts to understand the question. and ".txt", ".csv" "xml" "anyflat-file-format" is not the correct answer. LOL ) 4. Difference between coalesce and repartition. 5. some more questions on RDD Hive 1 Difference between orderby and sortby 2. Select * from . How many mapper will be created. 3. Analytical function/ What is RANK ? hdfs 1. Difference between block and split SQL 1. What is indexing on single column ? (stopped in between of my answer ) and followed by what is sorting type in index key ascending or descending. (How does it matter its primary key not composite key) 2. Can you have two primary key . (I do not thing there will need of two primary as one it self does the job.) No tell the implementation is it possible, can you define two primary key ? (No) One of the panel member got irritated and fired a few questions after saying bye and answering my question related to profile and position . (Literally like Panel one : okay bye thanks for you ... Panel: No I will ask one last question . which file format spark saves files. )

1 Answer

Data Structures and Algorithms and RDBMS

1 Answer

Scala, Spark, HDFS, Hive, Impala, Hbase, AWS, SQL

1 Answer

Your Profile doesn't seem to fit out JD, so you can leave and we'll let you know if we have relevant profile for you.

1 Answer

Hive Static partition vs Dynamic partition

1 Answer

Sqoop - JDBC connection. How does Sqoop work

1 Answer

Basic Big data questions on hive and spark,scala

1 Answer

Just Puzzles. Algebra and Resume

1 Answer
110 of 359 Interview Questions