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?

657

How can hive avoid mapreduce?

620

What are hive operators and its types?

681

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

630

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

648

what is partitions in hive?

644

What do you mean by schema on read?

671

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

108

how Cassandra delete Data?

106

what is Memtable in Cassandra?

105

what needs to be taken care while adding a Column?

how Cassandra writes data?

how Cassandra writes changed data into commitlog?

what is Cassandra- CQL collections?

102

what is Bloom Filter is used for in Cassandra?

108

Un-Answered Questions { Hadoop }

What other technologies have you used in hadoop sta ck?

928

Are spark dataframes immutable?

299

What is JMX?

211

How to set the number of reducers?

1316

List the various options available with the Hive command?

848

What are input format, input split & record reader and what they do?

575

how to proceed to write your first mapreducer program?

1304

What are the main components of MapReduce Job?

637

Explain what is namenode in hadoop?

401

How can we have to see all the clusters that are available in ambari?

What is Apache Cassandra?

What does /etc /init.d do?

657

Explain about the data model operations in HBase?

141

what are the key components of hbase?

163

What is difference between spark and kafka?

277

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