What is the use of the -compress-codec parameter?Big Data Interview Questions for Freshers/Bigdata Interview Questions and Answers for Freshers & Experienced

What is the use of the -compress-codec parameter?

-compress-codec parameter is generally used to get the output file of a sqoop import in formats other than .gz.

Posted Date:- 2021-10-21 09:16:14

What is the use of the -compress-codec parameter?

What is partitioning in Hive?

Name the three modes in which you can run Hadoop.

Write the command used to copy data from the local system onto HDFS?

What are the different core methods of a Reducer?

Mention the core methods of Reducer.

When to use MapReduce with Big Data.

What is Map Reduce in Hadoop?

How do you deploy a Big Data solution?

How do you copy data from the local system onto HDFS?

What would happen if you store too many small files in a cluster on HDFS?

What does P-value signify about the statistical data?

What are the different Output formats in Hadoop?

How can Big Data add value to businesses?

Talk about the different tombstone markers used for deletion purposes in HBase.

Explain the core methods of a Reducer.

What are some of the data management tools used with Edge Nodes in Hadoop?

Define the Port Numbers for NameNode, Task Tracker and Job Tracker.

How is HDFS different from traditional NFS?

Explain the different features of Hadoop.

Name the different commands for starting up and shutting down Hadoop Daemons.

What is the purpose of the JPS command in Hadoop?

What makes the HDFS fault-tolerant?

Which command will help you find the status of blocks and FileSystem health?

How can you restart NameNode and all the daemons in Hadoop?

What is the K-mean Algorithm?

If you have an input file of 350 MB, how many input splits would HDFS create and what would be the size of each input split?

What are the two types of metadata that a NameNode server holds?

What is a Combiner?

What is HBase?

What are the sources of Unstructured data in Big Data?

What is Data Cleansing?

Why is big data analytics important?

Why is HDFS fault-tolerant?

What are the differences between regular FileSystem and HDFS?

What are the three modes in which Hadoop can run?

What are the different vendor-specific distributions of Hadoop?

What is FSCK?

What are the different approaches to deal with Big Data?

Name some of the important tools useful for Big Data analytics.

How is big data analysis helpful in increasing business revenue?

Why is Hadoop used in Big Data analytics?

Are Hadoop and Big Data co-related?

What are the different types of Big Data?

What do you mean by commodity hardware?

Define HDFS and YARN, and talk about their respective components.

What are the 5 V’s in Big Data?

What do you know about the term “Big Data”?

How is Hadoop related to Big Data?

Define Big Data and explain the Vs of Big Data.

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