Hadoop Developer Interview Questions for Experienced -Part3

HI Guys, Recently i attended couple of interviews for the position of Hadoop Developer/BigData Developer. So adding all the questions here and find out answers for them...Happy learning. Interview1: How to move oozie workflows from Dev Env to production How to run 2 oozie workflows parallel What are the artifacts in oozie What are the…

Hadoop Developer Interview Questions for Experienced – Part2

Hi Guys, Here i'm updating the latest interview questions which i faced during my recent interviews....go through it and find answers....Happy learning Hadoop L&T: How array list will grow Till Java 6 int newCapacity = (oldCapacity * 3)/2 + 1; (Update) From Java 7 int newCapacity = oldCapacity + (oldCapacity >> 1); also, data from the old array is copied into the new array. Diff hashmap and…

Hadoop Developer Interview Questions for Experienced – Part1

Hi Guys, Here i'm updating the list of interview questions which i attended last week. check out the list of questions...i'm not updating the answers, Google it or find out yourselves and Happy learning...Hadoop 1. Interview1- it is top MNC. starts with "A" About project Mapreduce flow Custom partitioner Types of input formats Difference between…

Apache Spark Interview Questions – Part1

  The below are the list of questions which i faced during the hadoop developer interview as i mentioned having good knowledge in spark and scala in my profile...Happy learning Spark. Lazy evalution in spark Why partitions are immutable in spark Difference between sparkSQL And hiveQL Difference between map and arraybuffer in scala Performance tuning…

Sqoop Interview Questions – Part1

In this post i'm updating the sqoop interview questions which  i have faced..for some questions i didn't mention the answers findout yourself and happy learning Q. Sqoop null string handling using -- Null string "\$", --Non null string "\$" Q. Sqoop import file formats Avro, sequencefile, text, parquet, orc with hcatalog Q. Sqoop hive import…

Pig Interview Questions – part1

Here i'm updating some of the pig interview questions which i faced..some questions the answers i didn't updated. findout  the answers yourself and Happy learning Q. How do you limit your data in Pig. using Limit keyword on relation. example: A1 = load “/path/data” using PigStorage(“,”); A= limit A1 10; Q. What is cogroup. for…