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

Big Data Interview Questions

Questions Answers Views Company eMail

What is a 'block' in HDFS?

1027

What is Derby database?

958

How many Daemon processes run on a Hadoop system?

1136

What are the limitations of importing RDBMS tables into Hcatalog directly?

1002

How the Client communicates with HDFS?

1095

What is NoSQL?

966

What is Row Key?

1035

What is a Task instance in Hadoop? Where does it run?1

888

What does the overwrite keyword denote in Hive load statement?

1 2596

What is IdentityMapper?

1051

Why do we use Hadoop?

964

what is the typical block size of an HDFS block?

961

What is Hadoop Custom partitioner ?

1047

What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

1367

What stored in HDFS?

978

Un-Answered Questions { Big Data }

What is Cassandra-CQL collection?

What is spark yarn executor memoryoverhead?

374

What kinds of impala queries or data are best suited for hbase?

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

342

In case of embedded Hive, can the same metastore be used by multiple users?

848

What is the difference between apache mahout and spark mllib ?

What is the full form of MSLAB?

231

What is tunable consistency in Cassandra?

Define role of volume in big data?

613

What in hive made out of?

749

File permissions in HDFS?

What is document store db?

What are the relational operators available related to Grouping and joining in Pig language?

518

What is a ledger in bookkeeper?

Is Hive supports Temporary Tables?

1058

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