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

Big Data Interview Questions

Questions Answers Views Company eMail

Is there a date data type in Hive?

745

What do you mean by schema on reading?

714

Can a table be renamed in Hive?

735

What is throughput? How does HDFS provide good throughput?

File permissions in HDFS?

What is Hadoop HDFS – Hadoop Distributed File System?

How to change the replication factor of data which is already stored in HDFS?

What is Block in HDFS?

How to copy a file into HDFS with a different block size to that of existing block size configuration?

Can multiple clients write into an HDFS file concurrently?

Why is block size set to 128 MB in Hadoop HDFS?

108

Does HDFS allow a client to read a file which is already opened for writing?

How HDFS client divide the file into the block while storing inside HDFS?

What is the difference between Input Split and an HDFS Block?

What is NameNode and DataNode in HDFS?

Un-Answered Questions { Big Data }

what are the languages supported by apache spark for developing big data applications?

554

What is the role of a MapReduce partitioner?

807

What is Derby database?

908

What do you mean by meta information in hdfs? List the documents related to metadata.

When to use spark sql?

311

What is python spark?

334

Explain how indexing in hdfs is done?

What do you mean by replication strategy?

What is Cassandra?

Whenever we run hive query, new metastore_db is created. Why?

684

what is Bloom Filter is used for in Cassandra?

115

What are the different clustering in mahout?

What is lineage graph?

462

What Avro offers?

Explain what is a Hive variable. What do we use it for?

722

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