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 importance of driver in hive?

755

How can hive avoid mapreduce?

738

What are hive operators and its types?

790

when to choose “internal table” and “external table” in hive?

721

How do you specify the table creator name when creating a table in hive?

721

what is partitions in hive?

726

What do you mean by schema on read?

753

what does the shell commands “Capture” and “Consistency” determines?

113

how Cassandra delete Data?

114

what is Memtable in Cassandra?

113

what needs to be taken care while adding a Column?

107

how Cassandra writes data?

129

how Cassandra writes changed data into commitlog?

105

what is Cassandra- CQL collections?

107

what is Bloom Filter is used for in Cassandra?

118

Un-Answered Questions { Hadoop }

Describe Replication Factor?

What is the advantage of cassandra?

What is the purpose of Sqoop List Tables?

What is the full form of MSLAB?

228

What is SequenceFileInputFormat?

860

In the Producer, when does QueueFullException occur?

589

If a particular file is 50 mb, will the hdfs block still consume 64 mb as the default size?

Is apache spark going to replace hadoop?

376

Explain why do we need hadoop?

708

What counter in Hadoop MapReduce?

693

How client application interacts with the NameNode?

991

How to transfer data from Hive to HDFS?

Explain the action count() in Spark RDD?

287

How indexing is done in HDFS?

1143

What are the areas where ambari helps the system administrators to do?

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