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 executor memory in a spark application?

306

Explain caching in spark streaming.

307

Do you need to install spark on all nodes of yarn cluster?

2033

Define actions in spark.

2244

How do we create rdds in spark?

558

How is streaming implemented in spark?

1850

Explain a scenario where you will be using spark streaming.

1458

What are the languages supported by apache spark and which is the most popular one?

1705

Is there any benefit of learning mapreduce if spark is better than mapreduce?

1812

How can apache spark be used alongside hadoop?

1811

Define partitions in apache spark.

2176

Is there an api for implementing graphs in spark?

2036

Explain accumulators in apache spark.

2074

What file systems does spark support?

1787

What is a dstream in apache spark?

2033

Un-Answered Questions { Hadoop }

How do I clear my spark cache?

273

What is fluming?

161

What does streams api in kafka?

529

What is spark yarn executor memoryoverhead?

370

Does Cassandra work on Windows?

Can we install spark on windows?

342

What is shuffleing in mapreduce?

652

In hadoop_pid_dir, what does pid stands for?

525

What are the different elements of jconsole?

What is kafka Producer?

529

What is RDD?

486

What is difference between hadoop and spark?

309

Difference Between Apache Sqoop vs Flume?

What is a "reducer" in Hadoop?

874

What is jmx connector?

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