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

Is the keyword 'DEFINE' like a function name?

952

What is the difference between Cassandra, Pig and Hive?

987

Does 'ILLUSTRATE' run MR job?

852

What is the use of "order by" in Hive?

964

What are the different components of a Hive query processor?

1423

If you run hive as a server, what are the available mechanism for connecting it from application?

893

How to use Hive using the command line and Beeline?

943

What is Hive Data Definition language?

971

How to enable buckets in Hive?

952

What is the difference between external table and managed table?

967

What are the different Complex Data Types available in Hive?

904

Difference between external table and internal table in HIVE ?

922

When you should use Hbase?

909

What is CONCATENATE command in Hive?

920

What is dynamic partitioning and when is it used?

1041

Un-Answered Questions { Hadoop }

How the Client communicates with HDFS?

1063

How does an hadoop application look like or their basic components?

728

If datanodes increase, then do we need to upgrade namenode?

464

Is spark an etl?

294

What is the use of "cqlsh --version" command?

Explain various Apache Spark ecosystem components. In which scenarios can we use these components?

381

How many types of rdd are there in spark?

316

How do I try impala out?

How does apache spark work?

297

What is the role of Connector API?

553

What is unstructured data?

667

What are the basic available commands in Hadoop sqoop ?

964

How is hadoop different from spark?

270

What is SparkSession in Apache Spark?

290

Give the sqoop command to see the content of the job named myjob?

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