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Scala is next level of JVM language, Earning is popularity day by day against most popular sibling language JAVA. Considerable amount of developers are switching to scala and many...

Scala vs Java

Scala is next level of JVM language, Earning is popularity day by day against most popular sibling language JAVA. Considerable amount of developers are switching to scala and many...

A Scalable language Scala is an acronym for “Scalable Language”. This means that Scala grows with you. You can play with it by typing one-line expressions and observing the...

What is Scala ?

A Scalable language Scala is an acronym for “Scalable Language”. This means that Scala grows with you. You can play with it by typing one-line expressions and observing the...

To configure the OpenStack services with service users, create a project for all services and create users for each service. Assign the admin role to each service user and...

OpenStack- Service Management

To configure the OpenStack services with service users, create a project for all services and create users for each service. Assign the admin role to each service user and...

As an administrator, you manage projects, users, and roles. Projects are organizational units in the cloud to which you can assign users. Projects are also known as projects or accounts. Users can...

OpenStack – User Management

As an administrator, you manage projects, users, and roles. Projects are organizational units in the cloud to which you can assign users. Projects are also known as projects or accounts. Users can...

Mitaka is 13th release of Openstack. Following are some of the notable features in Mitaka. Compute Real-time Kernel-based Virtual Machine (KVM) compute nodes and custom CPU thread policies Live migration improvements...

OpenStack – Mitaka Installation using packstack

Mitaka is 13th release of Openstack. Following are some of the notable features in Mitaka. Compute Real-time Kernel-based Virtual Machine (KVM) compute nodes and custom CPU thread policies Live migration improvements...

Question: What are key components of Hbase? Answer: Main components of Hbase :- Hmaster Zoopkeeper Region Server Other main components are :- Memstore Hfile WAL Question: What role does Zookeeper...

BigData Interview Questions – Hbase

Question: What are key components of Hbase? Answer: Main components of Hbase :- Hmaster Zoopkeeper Region Server Other main components are :- Memstore Hfile WAL Question: What role does Zookeeper...

Q. If you run select * query in Hive, why it’s not run MapReduce? It’s an optimization technique. hive.fetch.task.conversion property can (FETCH task) minimize the latency of MapReduce overhead....

BigData Interview Questions- Hive 2

Q. If you run select * query in Hive, why it’s not run MapReduce? It’s an optimization technique. hive.fetch.task.conversion property can (FETCH task) minimize the latency of MapReduce overhead....

Question: What is Hive Metastore ? Answer: Hive Meta store is a database that stores metadata of your hive tables like table name,column name,data types,table location,number of buckets in the...

BigData Interview Questions- Hive 1

Question: What is Hive Metastore ? Answer: Hive Meta store is a database that stores metadata of your hive tables like table name,column name,data types,table location,number of buckets in the...

Question: Can I set the number of reducers to zero? Answer: Yes, Setting the number of reducers to zero is a valid configuration in Hadoop. When you set the...

BigData Interview Questions- MapReduce 2

Question: Can I set the number of reducers to zero? Answer: Yes, Setting the number of reducers to zero is a valid configuration in Hadoop. When you set the...

Question: What is Hadoop Map Reduce ? Answer: Hadoop MapReduce is a software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) in-parallel on large...

BigData Interview Questions- MapReduce

Question: What is Hadoop Map Reduce ? Answer: Hadoop MapReduce is a software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) in-parallel on large...

HBase is a database built on top of the HDFS. HBase provides fast lookups for larger tables. The goal of the HBase project is to host very large tables...

BigData – Basics of Apache HBase

HBase is a database built on top of the HDFS. HBase provides fast lookups for larger tables. The goal of the HBase project is to host very large tables...

Pig was initially developed at Yahoo!. Apache Pig is one of the components of Hadoop is used for processing and analysing large data sets. It runs on top of...

BigData – Basics of Apache Pig

Pig was initially developed at Yahoo!. Apache Pig is one of the components of Hadoop is used for processing and analysing large data sets. It runs on top of...

In this section we are going to cover the following :- Type of tables Creating views Type of Tables : You can have Managed table and External Table in Hive....

BigData – Apache Hive Tables

In this section we are going to cover the following :- Type of tables Creating views Type of Tables : You can have Managed table and External Table in Hive....

Apache Hive is one of the components of Hadoop Ecosystem. Hive is Datawarehouse provides the SQL-like interface used to Query Big Data . Features of Hive : Support various...

BigData – Basics of Apache Hive

Apache Hive is one of the components of Hadoop Ecosystem. Hive is Datawarehouse provides the SQL-like interface used to Query Big Data . Features of Hive : Support various...

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