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

Which all languages Apache Spark supports?

330

explain the concept of RDD (Resilient Distributed Dataset). Also, state how you can create RDDs in Apache Spark.

393

What advantages does Spark offer over Hadoop MapReduce?

281

Why is Spark RDD immutable?

344

What are the types of Apache Spark transformation?

275

What is Spark Core?

278

Why Apache Spark?

305

Explain transformation and action in RDD in Apache Spark?

285

How can we create RDD in Apache Spark?

293

What is SparkSession in Apache Spark?

277

What is the Difference SparkSession vs SparkContext in Apache Spark?

398

What are the abstractions of Apache Spark?

297

What is SparkContext in Apache Spark?

298

What are the components of Apache Spark Ecosystem?

389

Explain the RDD properties?

299

Un-Answered Questions { Hadoop }

Can you explain indexing?

387

What is HBase HMaster?

356

Is there any API available for implementing graphs in Spark?

298

what are the most common input formats defined in Hadoop?

612

What are the types of hive ddl commands?

719

Specify some uses of HBase?

185

How indexing is done in HDFS?

1028

What is the difference between an inputsplit and a block?

586

What is Cassandra Data Modelling ?

Why is spark so fast?

269

What is HDFS block size and what did you chose in your project?

939

What is cqlsh?

What is distinct clause in apache tajo?

How to change the replication factor of data which is already stored in HDFS?

What is the Reducer used for?

893

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