Usage of subqueries in Apache Hive queries   In this article we will learn how and where to use subqueries in Apache Hive. Sub-queries in Hive queries are allowed in from clause ad where clause. The following steps explain you in detail about subqueries in Hive. 1) Create a department table as explained in this article. 2) In From clause. The following query uses subquery in from clause.select namenewsalary from (select namesalary1.1 as newsalary from employee) emp_new;  Subquery columns can…

Usage of subqueries in Apache Hive queries In this article we will learn how and where to use subqueries in Apache Hive. Sub-queries in Hive queries are allowed in from clause ad where clause. The following steps explain you in detail about subqueries in Hive. 1) Create a department table as explained in this article. 2) In From clause. The following query uses subquery in from clause.select namenewsalary from (select namesalary1.1 as newsalary from employee) emp_new; Subquery columns can…

Starting and stopping Ambari-server   In this article we will learn how to work with Ambari server.We will learn how to start stop  restart and some more operations of ambari server from command line. If you are not using root user you have to prefix sudo to all commands listed in below steps.1) Check the status of Ambari server. You can use any one of the commands to check status of ambari server. ambari-server status OR sudoambari-server status ORservice ambari-server status This command…

Starting and stopping Ambari-server In this article we will learn how to work with Ambari server.We will learn how to start stop restart and some more operations of ambari server from command line. If you are not using root user you have to prefix sudo to all commands listed in below steps.1) Check the status of Ambari server. You can use any one of the commands to check status of ambari server. ambari-server status OR sudoambari-server status ORservice ambari-server status This command…

La plateforme dédiée aux Big Data et la solution clé pour Apache Hadoop en entreprise - Cloud

La plateforme dédiée aux Big Data et la solution clé pour Apache Hadoop en entreprise - Cloud

Cloudera Certified Administrator for Apache Hadoop  Exam Code- CCA-332  Release / Update Date-Dec 15, 2014  Question and Answer: 30 Edition: 2.0 Free Test Engine Included

Cloudera Certified Administrator for Apache Hadoop Exam Code- CCA-332 Release / Update Date-Dec 15, 2014 Question and Answer: 30 Edition: 2.0 Free Test Engine Included

Syncsort Simplify Integration of Streaming Data in Apache Spark, Kafka and Hadoop - https://www.predictiveanalyticstoday.com/syncsort-simplify-integration-streaming-data-apache-spark-kafka-hadoop/

Syncsort Simplify Integration of Streaming Data in Apache Spark, Kafka and Hadoop - https://www.predictiveanalyticstoday.com/syncsort-simplify-integration-streaming-data-apache-spark-kafka-hadoop/

Step by step guide for execution engines usage in Apache Hive.   In this article We will learn how to use different execution engines in Apache Hive. 1) Create a table called employee to run next queries. You can check how to create a table in Hive here. 2) Check available execution engine in hive-site.xml. grep -C2 -i execution.engine /etc/hive/conf/hive-site.xml Execution engine defined in hive-site.xml is the default execution engine.The image below shows tez is the execution engine…

Step by step guide for execution engines usage in Apache Hive. In this article We will learn how to use different execution engines in Apache Hive. 1) Create a table called employee to run next queries. You can check how to create a table in Hive here. 2) Check available execution engine in hive-site.xml. grep -C2 -i execution.engine /etc/hive/conf/hive-site.xml Execution engine defined in hive-site.xml is the default execution engine.The image below shows tez is the execution engine…

Hortonworks Data Platform 2.3 : Open Source Apache Hadoop Platform - https://www.predictiveanalyticstoday.com/hortonworks-data-platform-2-3-open-source-apache-hadoop-platform/

Hortonworks Data Platform 2.3 : Open Source Apache Hadoop Platform - https://www.predictiveanalyticstoday.com/hortonworks-data-platform-2-3-open-source-apache-hadoop-platform/

The Hadoop ecosystem: the (welcome) elephant in the room (infographic) — Tech News and Analysis

The Hadoop ecosystem: the (welcome) elephant in the room (infographic) — Tech News and Analysis

Big Data Science with Apache Hadoop, Pig and Mahout

Big Data Science with Apache Hadoop, Pig and Mahout

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