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 kafka an etl tool?

346

What language is apache kafka written in?

371

What is zookeeper server?

What is the difference between map and reduce?

452

What is optimal size of a file for distributed cache?

471

What can skew the mean?

235

What is vectorized query execution?

264

What is map side join?

227

What does dag stand for?

244

What is data ingestion pipeline?

232

What is the difference between reducebykey and groupbykey?

243

What is data skew and how do you fix it?

276

Is databricks a database?

266

Is databricks an etl tool?

232

What is a databricks cluster?

337

Un-Answered Questions { Hadoop }

What ate the key components of Hive Architecture?

690

How to Administering Hadoop?

734

Is hive an impala requirement?

Mention the common features in Pig and Hive?

742

Define parquet file format? How to convert data to parquet format?

277

How the read operation is performed on Cassandra node ?

Explain tokenize?

415

What are the different types of tombstone markers in HBase for deletion?

844

Mention key components of Hive Architecture?

694

What are the 2 types of table in hive?

503

Is hadoop still in demand?

308

Compare Transformation and Action in Apache Spark?

236

Is spark part of hadoop ecosystem?

239

What is speculative execution in Hadoop?

890

Define the use of Source Command in Cassandra?

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