How does hadoop hive work




















As the first purely open-source big data management solution , Talend Open Studio for Big Data helps you develop faster, with less ramp-up time. Using an Eclipse-based IDE, you can design and build big data integration jobs in hours, rather than days or weeks. By dragging graphical components from a palette onto a central workspace, arranging components, and configuring their properties, you can quickly and easily engineer Apache Hive processes.

Apache Hive is a powerful companion to Hadoop, making your processes easier and more efficient. Seamless integration is the key to making the most of what Apache Hive has to offer. What is Apache Hive? What is SAP? Ready to get started with Talend? Contact sales. What is a Data Lab? What is Data as a Service?

Last Updated : 06 Jul, Prerequisite — Introduction to Hadoop , Apache Hive The major components of Hive and its interaction with the Hadoop is demonstrated in the figure below and all the components are described further: User Interface UI — As the name describes User interface provide an interface between user and hive.

It enables user to submit queries and other operations to the system. Driver — Queries of the user after the interface are received by the driver within the Hive. Concept of session handles is implemented by driver. Compiler — Queries are parses, semantic analysis on the different query blocks and query expression is done by the compiler.

Execution plan with the help of the table in the database and partition metadata observed from the metastore are generated by the compiler eventually. Metastore — All the structured data or information of the different tables and partition in the warehouse containing attributes and attributes level information are stored in the metastore. Sequences or de-sequences necessary to read and write data and the corresponding HDFS files where the data is stored.

Hive selects corresponding database servers to stock the schema or Metadata of databases, tables, attributes in a table, data types of databases, and HDFS mapping. MapReduce: It is a parallel programming model for processing large amounts of structured, semi-structured, and unstructured data on large clusters of commodity hardware. It provides a fault-tolerant file system to run on commodity hardware.

The Hadoop ecosystem contains different sub-projects tools such as Sqoop, Pig, and Hive that are used to help Hadoop modules. Pig: It is a procedural language platform used to develop a script for MapReduce operations. Hive is a data warehouse infrastructure tool to process structured data in Hadoop. It resides on top of Hadoop to summarize Big Data, and makes querying and analyzing easy. Initially Hive was developed by Facebook, later the Apache Software Foundation took it up and developed it further as an open source under the name Apache Hive.

It is used by different companies. What this means is inspecting, cleaning, transforming, and modeling data with the goal of discovering useful information and suggesting conclusions. Data analysis has multiple aspects and approaches, encompassing diverse techniques under a variety of names in different domains.

Hive allows users to simultaneously access data and, at the same time, increases the response time, i. In fact, Hive typically has a much faster response time than most other types of queries. Hive is also highly flexible as more commodities can easily be added in response to adding more clusters of data without any drop in performance. Apache Hive lets you work with Hadoop in a very efficient manner. It is a complete data warehouse infrastructure that is built on top of the Hadoop framework.

Hive is uniquely deployed to come up with querying of data, powerful data analysis, and data summarization while working with large volumes of data.

Hive has a distinct advantage of deploying high-speed data reads and writes within data warehouses while managing large datasets distributed across multiple locations, all thanks to its SQL-like features.

Hive provides a structure to the data that is already stored in the database. Check out our Hive Cheat Sheet for detailed information. Apache Hive is a much sought-after skill to master if you want to make it big in the Big Data Hadoop world. Currently, most of the enterprises are looking for people with the right set of skills when it comes to analyzing and querying huge volumes of data.

Thus, learning Apache Hive is the best way to command top salaries in some of the best organizations around the world. Get in touch with Intellipaat and enroll in its fabulous tech courses to take your career to the next level! Leave a Reply Cancel reply. Your email address will not be published. All Tutorials. Signup for our weekly newsletter to get the latest news, updates and amazing offers delivered directly in your inbox.

What is Apache Hive?



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