Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

Explain count_star?

612

Explain pigdump function?

657

What is kerberos secured cluster in apache pig?

742

How can you debug a pig script?

629

What is the relationship between hdfs, hbase, pig, hive and azkaban?

557

What is the use of binstorage?

601

What are complex data types in pig?

640

Explain textloader function?

703

What is a bag in apache pig?

577

Explain plucktuple?

616

What is a ledger in bookkeeper?

What are the different zkclientbindings?

What are the design goals of zookeeper?

What are znodes?

What are nodes and ephemeral nodes?

Un-Answered Questions { Big Data }

What is the relationship between hdfs, hbase, pig, hive and azkaban?

557

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

467

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

1023

Explain the difference between gen1 and gen2 hadoop with regards to the namenode?

770

What are the most common InputFormats in Hadoop?

654

Is Hive supports Temporary Tables?

1058

Is impala intended to handle real time queries in low-latency applications or is it for ad hoc queries for the purpose of data exploration?

How does A/B testing work?

679

What all tasks you can perform for managing services using Ambari service tab?

What is the replica placement Strategy in Cassandra ?

What are the different clustering in mahout?

Explain Cqlsh?

If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?

766

Explain Spark coalesce() operation?

309

What are the execution modes in the apache pig?

551

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