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

Can you list some useful zookeeper tools?

What are barriers?

How hbase uses zookeeper?

What is a bookkeeper client in bookkeeper?

What is closing out ledgers?

Why not just use zookeeper for everything?

What happens to zk sessions while the cluster is down?

What are the prime features of apache zookeeper?

Can I run an ensemble cluster behind a load balancer?

What is metadata storage service in bookkeeper?

What are the options-process for upgrading zookeeper?

Is there an easy way to expire a session for testing?

What are producer-consumer queues?

What is a bookie in bookkeeper?

Describe how hbase uses zookeeper?

Un-Answered Questions { Hadoop }

What are the types of traditional method of message transfer?

622

How to keep HDFS cluster balanced?

1133

Does spark need hdfs?

303

What are barriers?

Explain foreach() operation in apache spark?

319

Mention what is the number of default partitioner in Hadoop?

744

Is it necessary to start Hadoop to run any Apache Spark Application ?

298

What is your favourite tool in the hadoop ecosystem?

1007

What co-group does in Pig?

667

How is the splitting of file invoked in Hadoop framework?

563

How would you check whether your NameNode is working or not?

445

What does block mean?

480

What operations RDD support?

325

How to change the name of the output file from part-r-00000 in Hadoop MapReduce?

697

Explain data flow in Flume?

103

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