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

Does hadoop follows the unix pattern?

387

What is the hadoop-core configuration?

433

What is bucketing ?

628

Can we load data into a view?

647

Difference between hive and impala?

686

What are the types of hive ddl commands?

709

How can you stop a partition form being queried?

720

What is the default location where hive stores table data?

647

What are types of hive built-in functions?

694

Why do we need hive?

684

Is hive suitable to be used for oltp systems? Why?

743

What types of costs are associated with creating the index on hive tables?

970

Give some points of hive for hadoop ?

669

Write a query to insert a new column(new_col int) into a hiev table (htab) at a position before an existing column (x_col)

753

What is a metastore in hive?

653

Un-Answered Questions { Hadoop }

What is the difference between dataframe and dataset in spark?

267

What is the data storage component used by Hadoop?

580

How is the processing of streaming data achieved in Apache Spark? Explain.

268

What is bookkeeper?

What is sample Query in Hive?

646

What is NameNode and DataNode in HDFS?

Do I need to install hadoop for spark?

254

Is spark a language?

256

Explain the repartition() operation in Spark?

266

What is pyarrow?

389

Define actions in spark.

2216

What is a block and block scanner in HDFS?

977

What is lazy evaluation in Spark?

298

What are the different methods to run Spark over Apache Hadoop?

670

What is the primary purpose of the pig in the hadoop architecture?

2690

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