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?

715

How can hive avoid mapreduce?

697

What are hive operators and its types?

751

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

678

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

692

what is partitions in hive?

684

What do you mean by schema on read?

715

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

111

how Cassandra delete Data?

114

what is Memtable in Cassandra?

109

what needs to be taken care while adding a Column?

107

how Cassandra writes data?

117

how Cassandra writes changed data into commitlog?

what is Cassandra- CQL collections?

105

what is Bloom Filter is used for in Cassandra?

115

Un-Answered Questions { Hadoop }

What are the benefits of Spark lazy evaluation?

320

What are the types of System tools?

650

Discuss about the different tombstone markers used for deletion purposes in HBase.?

185

What is a MapReduce Combiner?

796

Can you explain how to minimize data transfers while working with Spark?

539

When not to use apache kafka?

512

How can we control particular key should go in a specific reducer?

914

What are the components of spark?

279

Explain tajo configuration files?

What do you understand by worker node?

283

What is RDD?

483

Why is Data Block size set to 128 MB in Hadoop?

439

How can multi-hop agent be set up in Flume?

118

What are the three types of tombstone markers in hbase?

152

Clarify what is shuffling in map reduce?

634

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