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 ZooKeeper ensemble?

What are the possible Job roles?

What are the challenges Of Distributed Applications?

Explain the types Of Znodes?

Explain the CLI In Zookeeper?

What is ZooKeeper quorum?

What is the model of a ZooKeeper cluster?

What must we know to work on Zookeeper well?

What do you mean by ZNode?

Explain about the different types of transformations on DStreams?

406

What are the various levels of persistence in Apache Spark?

326

How can you trigger automatic clean-ups in Spark to handle accumulated metadata?

467

What are the disadvantages of using Apache Spark over Hadoop MapReduce?

479

Is it necessary to install spark on all the nodes of a YARN cluster while running Apache Spark on YARN ?

362

Explain about the major libraries that constitute the Spark Ecosystem?

433

Un-Answered Questions { Hadoop }

How does an hadoop application look like or their basic components?

769

What are znodes?

Where cassandra stores its data?

Explain the hdfs architecture?

Is impala production ready?

What are the various diagnostic operators available in Apache Pig?

773

Can you explain spark sql?

332

how to share the metastore within multiple users?

969

What are the actions followed by hadoop?

506

After increasing the replication level, I still see that data is under replicated. What could be wrong?

510

What is executor memory and driver memory in spark?

298

What are the views in Hive?

701

What is the difference between Hbase and Hive?

761

What file systems does spark support?

1802

Explain about the different channel types in Flume.

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