Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

What is Distributed Cache?

906

what is difference between pig and sql?

2606

What problem does Apache Pig solve?

802

if you run Hive as a server?

921

What problems have you faced when you are working on Hadoop code?

969

What is HDFS - Hadoop Distributed File System?

962

Are multiline comments supported in Hive?

3284

How does MapReduce framework view its input internally?

869

What is the stable version of Hive ?

2629

What are the most commonly defined input formats in Hadoop?

1058

What does /var/hadoop/pids do?

1264

What is the use of Combiner?

979

What is Hive ?

992

what is SPF?

1510

what are Task Tracker and Job Tracker?

1071

Un-Answered Questions { Hadoop }

How many InputSplits will be made by hadoop framework?

492

Replication causes data redundancy and consume a lot of space, then why is it pursued in hdfs?

What are the possible Job roles?

How can Spark be connected to Apache Mesos?

327

What is Hive Present Version ?

1092

Explain the difference between mapreduce engine and hdfs cluster?

130

The difference between GROUP and COGROUP operators in Pig?

566

Explain SparkContext in Apache Spark?

329

Do I need to know scala to learn spark?

362

What is Interceptor?

109

Explain Apache Ambari architecture?

Is spark sql a database?

263

How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?

625

What do you understand by the super column in cassandra?

Give examples of some companies that are using Hadoop structure?

440

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