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 relationship between Job and Task in Hadoop?

662

What combiners is and when you should use a combiner in a MapReduce Job?

624

How to set mappers and reducers for Hadoop jobs?

613

What are the data components used by Hadoop?

738

What is the best way to copy files between HDFS clusters?

668

Is it possible to search for files using wildcards?

642

In Hadoop what is InputSplit?

630

What is partitioning in MapReduce?

717

What is the definition of Hive?

732

What is the current version of Hive?

766

Explain about ACID transactions in Hive?

732

Is it possible to change the default location of Managed Tables in Hive, if so how?

719

Is it possible to add 100 more nodes when we already have 100 nodes in Hive?

1261

What is the default database provided by Apache Hive for metastore?

647

What is Buckets in Hive?

745

Un-Answered Questions { Hadoop }

Explain the difference between mahout & mllib?

Explain various Apache Spark ecosystem components. In which scenarios can we use these components?

381

Why is spark good?

290

How can you connect an application

1028

How to perform the inter-cluster data copying work in HDFS?

Why HDFS?

What is the use of illustrate in pig?

520

Is ambari python client can be used to make good use of ambari api’s?

Can spark work without hadoop?

331

Define parquet file format? How to convert data to parquet format?

316

What do you understand by Lazy Evaluation?

376

How tasks are created in spark?

290

How to open a connection in hbase?

153

What are different String functions available in PIG?

595

When do you have to avoid secondary indexes?

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