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 happens if the quantity of the reducer is 0 in mapreduce?

646

Clarify what combiners are and when you should utilize a combiner in a map reduce job?

647

Clarify what is shuffling in map reduce?

689

What are the fundamental configurations parameters specified in map reduce?

678

What combiners are and when you should utilize a combiner in a map reduce job?

659

What are the four essential parameters of a mapper?

704

What does rack awareness mean?

455

What the information segments utilized by hadoop are?

448

Clarify what a task tracker is in hadoop?

476

How ordering in hdfs is finished?

472

Clarify what is sequence file input format?

571

How job tracker schedules an assignment?

458

Clarify what jobtracker is in hadoop? What are the activities followed by hadoop?

474

What is the most widely recognized info formats characterized in hadoop?

481

Clarify what webdav is in hadoop?

506

Un-Answered Questions { Hadoop }

What rdd stands for?

337

What is the default database provided by Apache Hive for metastore?

682

What is impala data types?

What are the different types of UDF's in Java supported by Apache Pig?

1089

What MapReduce framework consists of?

1152

What are the basics of zookeeper api?

How to Write a UDF function in Hive?

739

How is indexing done in HDFS?

What are the different operational commands in HBase at record level and table level?

371

What is Cassandra Database Software ?

166

What is a distributed cache in mapreduce framework?

663

Clarify Memtable?

How to change the name of the output file from part-r-00000 in Hadoop MapReduce?

699

What hadoop does in safe mode?

702

What are components of ambari tjat are important for automation and integration?

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