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

Is spark secure?

235

What is executor memory and driver memory in spark?

236

What is the point of apache spark?

228

What is rdd map?

269

What is faster than apache spark?

240

What is spark training?

235

How many ways we can create rdd in spark?

233

How tasks are created in spark?

237

Is apache spark a tool?

222

What is difference between spark and mapreduce?

228

Who created spark?

230

How is spark fault tolerance?

336

What is cluster in apache spark?

270

How many ways we can create rdd?

232

What does repartition do in spark?

272

Un-Answered Questions { Hadoop }

Explain how can you change a column data type in Hive?

542

How do you run pig scripts on kerberos secured cluster?

393

How data transfer happens from HDFS to Hive?

577

What are the parameters used to create keyspace in cassandra?

What is throughput in HDFS?

What is a row in cassandra? And what are the different elements of it?

Where are rdd stored?

239

What is ZooKeeper quorum?

What is safe mode in Hadoop?

783

Explain the role of Streams API?

403

What is combiner aggregator?

438

How do you categorize a big data?

512

How NameNode tackle Datanode failures in Hadoop?

307

What is indexing and why do we need it?

568

How does apache spark work?

242

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