Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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 }

Explain pig architecture?

546

What is the work of hive/hcatalog?

749

How multi-hop agent can be setup in Flume?

110

What do you mean by meta information in hdfs? List the documents related to metadata.

State some impala hadoop benefits?

When the reducers are are started in a mapreduce job?

595

What is sparkContext?

282

What is a generic UDF in the hive?

757

Does hdfs enable a customer to peruse a record, which is already opened for writing?

What is the data storage component used by Hadoop?

620

What is Pig Storage?

604

What is the problem in having lots of small files in hdfs?

What do sorting do?

682

What is a block in HDFS, why block size 64MB?

How can you transfer data from hive to hdfs?

709

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