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 driver program in spark?

288

What is spark submit?

272

How do I clear my spark cache?

259

What is a partition in spark?

350

What is spark vectorization?

305

What is off heap memory in spark?

295

What is a tuple in spark?

271

Is spark an etl?

279

How is rdd distributed?

307

What are the common transformations in apache spark?

271

What is the difference between dataset and dataframe in spark?

351

What is distributed cache in spark?

333

What is catalyst framework in spark?

302

How is dag created in spark?

273

What does spark do during speculative execution?

309

Un-Answered Questions { Hadoop }

What are the differences between PIG and HIVE?

569

What is the difference between an hdfs block and input split?

Explain the use of tasktracker in the hadoop cluster?

605

How can we drop a table in HCatalog?

Mention what is distributed cache in hadoop?

410

Can the region server will be located on all datanodes?

316

Is it possible to split 100 lines of input as a single split in MapReduce?

927

How to call impala built-in functions?

How would an hadoop administrator deploy various components of hadoop in production?

396

Explain the level of parallelism in Spark Streaming? Also, describe its need.

300

How to load data into table created in hive ?

656

Explain first() operation in Apache Spark RDD?

356

Can you define rdd lineage?

264

What is spark database?

320

What is skew data?

287

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