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 the advantage of using –password-file rather than -P option while preventing the display of password in the sqoop import statement?

What do you mean by Free Form Import in Sqoop?

What is the role of JDBC driver in Sqoop?

Is JDBC driver enough to connect sqoop to the databases?

What is the work of Export in Hadoop sqoop?

Use of Codegen command in Hadoop sqoop?

Use of Help command in Hadoop sqoop?

How can you schedule a sqoop job using Oozie?

What is the importance of — the split-by clause in running parallel import tasks in sqoop?

What is a sqoop metastore?

What is ZooKeeper?

What are the Benefits Of Distributed Applications?

What are the Benefits Of Zookeeper?

What is the zookeeper daemon name?

What is Apache Zookeeper Meant For?

Un-Answered Questions { Hadoop }

how you can reduce churn in ISR? When does broker leave the ISR?

619

Difference between groupByKey vs reduceByKey in Apache Spark?

470

How can we import data from particular row or column? What is the destination types allowed in Sqoop import command?

Which files are used by the startup and shutdown commands?

720

What is broadcast variable?

365

What is the job of blend () and repartition () in Map Reduce?

640

Define Apache Pig?

632

Explain the terms Spark Partitions and Partitioners?

303

What sorts of actions does the job tracker process perform?

421

Explain about the different cluster managers in Apache Spark

329

Explain why to use hbase?

157

What do you understand by the term Straggler ?

686

How do users interact with HDFS in Apache Pig ?

755

Is apache spark an etl tool?

276

Explain HCatLoader APIs?

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