What is Apache Hive used for?
What is Apache Hive used for?
Hive allows users to read, write, and manage petabytes of data using SQL. Hive is built on top of Apache Hadoop, which is an open-source framework used to efficiently store and process large datasets. As a result, Hive is closely integrated with Hadoop, and is designed to work quickly on petabytes of data.
Is Apache Hive a database?
No, we cannot call Apache Hive a relational database, as it is a data warehouse which is built on top of Apache Hadoop for providing data summarization, query and, analysis. It supports queries expressed in a language called HiveQL, which automatically translates SQL-like queries into MapReduce jobs executed on Hadoop.
What is a Hive interview?
Hive is a tool in Hadoop ecosystem which provides an interface to organize and query data in a databse like fashion and write SQL like queries. It is suitable for accessing and analyzing data in Hadoop using SQL syntax.
What are the main limitations of Apache Hive?
Some of the limitations of Apache Hive are:
- Hive is not designed for the OLTP (Online transaction processing). We can use it for OLAP.
- It does not offer real-time queries.
- It provides limited subquery support.
- Latency of Hive is generally very high.
Who uses Apache Hive?
Who uses Apache Hive?
| Company | Website | Company Size |
|---|---|---|
| Lorven Technologies | lorventech.com | 50-200 |
| Zendesk Inc | zendesk.com | 1000-5000 |
What is difference between Hive and Beeline?
The primary difference between the two involves how the clients connect to Hive. The Hive CLI, which connects directly to HDFS and the Hive Metastore, and can be used only on a host with access to those services. Beeline, which connects to HiveServer2 and requires access to only one .
What are the challenges faced in Hive?
There are many real time problems where we need nested queries , whereas hive supports only correlated queries. There is no subtract operation available in hive and thus we need to create two tables and perform left outer join on it with condition to accomplish the task.
In what language is Hive written?
Java
Apache Hive/Programming languages
What are complex data types in Hive?
Hive complex data types such as arrays, maps, and structs are a composite of primitive or complex data types. Informatica Developer represents complex data types with the string data type and uses delimiters to separate the elements of the complex data type.
What are the modes of Hive?
Depending on the size of Hadoop data nodes, Hive can operate in two different modes:
- Local mode.
- Map-reduce mode.
What is difference between hive and Beeline?
What is Apache spark?
What is Apache Spark? Apache Spark is an open-source, distributed processing system used for big data workloads. It utilizes in-memory caching, and optimized query execution for fast analytic queries against data of any size.
What is Apache Hive job?
Apache Hive is a data warehouse software project built on top of Apache Hadoop for providing data summarization, query and analysis. To get rid of this dilemma Wisdomjobs framed Apache Hive job interview questions and answers to make is easier for your interview preparation.
How many interview questions are there in hive?
As a result, we have we have seen top 30 Hive Interview Questions and Answers. Thus, once you go through it, you will get an in-depth knowledge of questions which may frequently ask in Hive interview. We hope all these questions will help you in preparing well for your Hive interviews ahead.
Is Hive a database or an abstraction?
However, Hive gives SQL queries to perform an analysis and also an abstraction. Although, Hive it is not a database it gives you logical abstraction over the databases and the tables. Que 2. What kind of applications is supported by Apache Hive?
What is the difference between hive and data warehousing?
Ans. Basically, a tool which we call a data warehousing tool is Hive. However, Hive gives SQL queries to perform an analysis and also an abstraction. Although, Hive it is not a database it gives you logical abstraction over the databases and the tables. Que 2. What kind of applications is supported by Apache Hive? Ans.