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

when you can use Alter keyspace?

124

what is SStable consist of?

106

How to exit the vi editor?

778

Does the hdfs client decide the input split or namenode?

717

Which files are used by the startup and shutdown commands?

773

What is cloudera and why it is used?

840

What is a spill factor with respect to the ram?

915

Can we have multiple entries in the master files?

743

On which port does ssh work?

790

Do we need to give a password, even if the key is added in ssh?

768

What are the port numbers of namenode, job tracker and task tracker?

754

Is fs.mapr.working.dir a single directory?

718

How can we look for the namenode in the browser?

754

What do slaves consist of?

712

How can we check whether namenode is working or not?

702

Un-Answered Questions { Hadoop }

Explain the functionalities of ganglia in ambari?

What is spark certification?

326

what is the meaning of broker in Kafka?

600

Explain InputFormat?

1070

Explain join() operation in Apache Spark?

364

According to IBM, what are the three characteristics of Big Data?

474

What is Bucketing and Clustering in Hive?

725

Which file systems does Spark support?

309

What is wal and hlog in hbase?

317

What is the purpose of RawComparator interface?

1175

What do you mean by snitch?

What is the full form of MSLAB?

231

Define the use of Source Command in Cassandra?

How is indexing done in HDFS?

Explain the Differences between Hive and Spark SQL?

758

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