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 transformation in spark?

341

Can you explain spark sql?

332

What are the main components of spark?’

332

Can you explain spark streaming?

317

How rdd persist the data?

309

Can you explain accumulators in apache spark?

330

What are common spark ecosystems?

338

What are features of apache spark?

351

Explain how can apache spark be used alongside hadoop?

266

What are the types of cluster managers in spark?

293

Can you define pagerank?

304

Can you explain spark core?

280

Explain about mappartitions() and mappartitionswithindex()

340

Explain how can you minimize data transfers when working with spark?

450

Explain how can spark be connected to apache mesos?

300

Un-Answered Questions { Hadoop }

What does the file hadoop-metrics.properties do?

533

When should you use hbase?

192

How can you connect an application

1066

Describe the different consistency levels for read operation in cassandra?

Explain the data model of hbase.

178

Where are rdd stored?

308

State some advantages of impala?

Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?

1120

Explain how indexing in hdfs is done?

Can you explain data versioning?

174

What are the components of Spark Ecosystem?

318

What is flatmap in apache spark?

340

When can you use ALTER KEYSPACE?

What are the exception handling operators in Pig script?

621

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

307

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