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

How will you consume CSV file into the Hive warehouse using built SerDe?

839

What is the difference between Hiveserver1 and Hiveserver2?

855

How to Rename a table in Hive

799

What are the advantages and Disadvantages in archieving partition in Hive?

793

When to choose "External Table" in Hive?

842

How to skip header rows from a table in Hive?

866

Where does the data of a Hive table gets stored?

713

Can We Change settings within Hive Session? If Yes, How?

824

What are the different types of tables available in Hive?

739

When we are using queries instead of scripting?

769

When to use explode in Hive?

797

How can I delete the above index named index_bonuspay?

774

What is a Hive variable? What for we use it?

849

What are the components of a Hive query processor?

781

What is CTE Table in Hive?

796

Un-Answered Questions { Hadoop }

Explain first() operation in Spark?

366

What is the utility of using Writable Comparable Custom Class in Map Reduce code?

1050

what Hive query processor does?

714

Apache Spark is a good fit for which type of machine learning techniques?

298

Elucidate the concept of cap theorem?

What is NoSQL?

966

Define a namenode?

708

what happens when Hadoop spawned 50 tasks for a job and one of the task failed?

742

Can free form SQL queries be used with Sqoop import command?

What is the stable version of Hive ?

2666

How Big is ‘Big Data’?

461

How to add the partition in existing table without the partition table?

754

What is Bucket in Hive?

783

Explain the composite key?

How is rdd distributed?

335

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