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 do you understand by Executor Memory in a Spark application?

483

Is Apache Spark a good fit for Reinforcement learning?

310

What is Catalyst framework?

309

What do you understand by Pair RDD?

400

How can you launch Spark jobs inside Hadoop MapReduce?

333

How can you compare Hadoop and Spark in terms of ease of use?

307

Which one will you choose for a project –Hadoop MapReduce or Apache Spark?

327

What do you understand by Lazy Evaluation?

393

How can you remove the elements with a key present in any other RDD?

311

How Spark uses Hadoop?

314

What is a DStream?

333

What are the various data sources available in SparkSQL?

351

Explain about the core components of a distributed Spark application?

314

What are the benefits of using Spark with Apache Mesos?

301

What are the common mistakes developers make when running Spark applications?

309

Un-Answered Questions { Hadoop }

Explain what is zookeeper in kafka? Can we use kafka without zookeeper?

573

What are the primitive data types in Pig?

589

Replication causes data redundancy then why is is pursued in HDFS?

What is cluster in apache spark?

335

How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?

820

Is apache spark a framework?

290

What is a “Distributed Cache” in Apache Hadoop?

822

By Default, how many partitions are created in RDD in Apache Spark?

325

Explain various level of persistence in Apache Spark?

316

What is catalyst framework in spark?

322

What is the sequence of execution of map, reduce, recordreader, split, combiner, partitioner?

756

Can you explain sqoop metastore?

What kind of music is flume?

What is a udf?

497

How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?

736

For More Un-Answered { Hadoop } Questions Click Here