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 }

Specify the different types of tables accessible in hive?

844

How hive can improve performance with orc format tables?

774

Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?

481

What is JMX?

221

Define actions in spark.

2257

How does apache spark engine work?

332

How do I change hive execution engine to spark?

315

How hbase handles the write failure?

208

What are different logging levels in cassandra?

What is SerDe in Apache Hive ?

978

What is a tuple?

1270

List out the some common problems faced by data analyst?

462

When the reducers are are started in a mapreduce job?

655

How many types of Tables in Hive?

841

Explain Reliability and Failure Handling in Apache Flume?

108

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