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 a bag in Pig Latin?

897

What are the different Relational Operators available in pig language?

768

What are the different ways of executing Pig script?

836

Explain the LOAD keyword in Pig script?

670

What is a MapFile?

784

Name the scalar data type and complex data types in Pig?

706

What are the relational operators available related to combining and splitting in pig language?

751

Highlight the key differences between MapReduce and Apache Pig?

756

How to write 'foreach' statement for bag datatype in pig scripts?

723

State the usage of 'filters', 'group' , 'orderBy', 'distinct' keywords in pig scripts?

696

Mention the common features in Pig and Hive?

946

What are the debugging tools used for Apache Pig scripts?

820

Differentiate between Hadoop MapReduce and Pig?

676

What is a UDF in Pig?

778

Differentiate between GROUP and COGROUP operators?

675

Un-Answered Questions { Hadoop }

Can we use windows for hadoop?

519

Compare Spark vs Hadoop MapReduce

340

How to copy a file into HDFS with a different block size to that of existing block size configuration?

What is the best hardware configuration to run Hadoop?

1665

What is the MapReduce plan in pig architecture?

1097

What do you mean by inputformat?

657

What is spark table?

278

what is Speculative Execution?

889

Discuss writeahead logging in Apache Spark Streaming?

343

What is ZooKeeper?

Explain how indexing is done in hdfs?

What is the concept of SuperColumn in Cassandra?

Where does Spark Driver run on Yarn?

304

What is spark repartition?

327

What is wal and hlog in hbase?

317

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