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 are the most memory-intensive operations?

What are the main features of impala?

Where can I get sample data to try?

Where can I find impala documentation?

What features from relational databases or hive are not available in impala?

Is hive an impala requirement?

When does impala hold on to or return memory?

What is zookeper?

Mention some instances where zookeeper is using?

How can we create znodes?

How can we create children / sub-znode?

How can we remove a znode?

Explain the zookeeper workflow?

What are the basics of zookeeper api?

What is mandatory while creating a table in cassandra?

Un-Answered Questions { Hadoop }

What daemons run on master nodes?

485

Explain HBase Meta Table?

175

Will various customers write into an hdfs record simultaneously?

What is cluster mode in spark?

319

Differentiate Reducer and Combiner in Hadoop MapReduce?

681

How can you trigger automatic clean-ups in Spark to handle accumulated metadata?

444

What is Distributed Cache in Hadoop?

457

What problems have you faced when you are working on Hadoop code?

969

Differentiate between GROUP and COGROUP operators?

629

What is the Physical plan in pig architecture?

531

How can you overwrite the replication factors in HDFS?

1247

What is Cassandra Data Modelling ?

How can you connect an application

1028

What is skew data?

301

What is difference between spark and hadoop?

258

For More Un-Answered { Hadoop } Questions Click Here