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 are the key segments of hive architecture?

731

Say what the object inspector functionality is in hive?

797

What is the major difference between local and remote meta-store?

943

Clarify how hive de-serialize and serialize the information?

676

What is the utilization of hcatalog?

718

What are the various uses of explode hive?

719

Say when to pick “inward table” and “outside table” in hive?

742

What do hive variable means? How can we utilize it?

623

What in hive made out of?

740

Specify the different types of tables accessible in hive?

838

Clarify about the smb join in hive?

709

What is the throughput? How does hdfs give great throughput?

How does hdfs ensure information integrity of data blocks squares kept in hdfs?

What do you mean by block scanner in hdfs?

What do you mean by meta information in hdfs? List the documents related to metadata.

Un-Answered Questions { Hadoop }

What is the purpose of RawComparator interface?

1167

When to choose "External Table" in Hive?

834

What is Rack awareness?

1035

How hive can improve performance with orc format tables?

765

What is the role of a zookeeper in a kafka cluster?

591

What are the limitations of Spark?

304

When to use hadoop, hbase, hive and pig?

570

What happens if you alter the block size of a column family on an already occupied database?

220

What is the significance of ‘IF EXISTS” clause while dropping a table?

748

Explain keys() operation in Apache spark?

348

Define the difference between hive and hbase?

172

What is a "map" in Hadoop?

834

We have already sql then why nosql?

465

Can you explain the term, Cassandra?

106

What is Sqoop?

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