Table of Contents
- 1 How is Pig and Hive different?
- 2 When should I use Hive?
- 3 Does Pig differ from MapReduce and Hive if yes how?
- 4 Which join is common in Hive and Pig?
- 5 How does hive work?
- 6 What type of datasets would you use Pig for?
- 7 What is the difference between Apache Hive and Apache Pig?
- 8 What is Hive and how does Facebook use it?
How is Pig and Hive different?
Pig is used to perform all kinds of data manipulation operations in Hadoop. It provides the Pig-Latin language to write the code that contains many inbuilt functions like join, filter, etc. The two parts of the Apache Pig are Pig-Latin and Pig-Engine….Difference between Pig and Hive :
| S.No. | Pig | Hive |
|---|---|---|
| 12. | It does not support ODBC. | It supports ODBC. |
Why hive is used instead of pig?
Hive Query language (HiveQL) suits the specific demands of analytics meanwhile PIG supports huge data operation. PIG was developed as an abstraction to avoid the complicated syntax of Java programming for MapReduce. On the other hand HIVE, QL is based around SQL, which makes it easier to learn for those who know SQL.
When should I use Hive?
Hive should be used for analytical querying of data collected over a period of time. e.g Calculate trends, summarize website logs but it can’t be used for real time queries. HBase fits for real-time querying of Big Data. Facebook use it for messaging and real-time analytics.
What is pig used for in Hadoop?
Pig is a high level scripting language that is used with Apache Hadoop. Pig enables data workers to write complex data transformations without knowing Java. Pig’s simple SQL-like scripting language is called Pig Latin, and appeals to developers already familiar with scripting languages and SQL.
Does Pig differ from MapReduce and Hive if yes how?
Yes, Pig differs from MapReduce because, in MapReduce, the group by operation is performed at reducer side and filter, and also in the map phase the projection is implemented. Pig Latin provides the operations that are similar to MapReduce, such as groupby, orderby, and filters.
Does pig differ from MapReduce and hive if yes how?
Which join is common in Hive and Pig?
Inner Join is used quite frequently; it is also referred to as equijoin. An inner join returns rows when there is a match in both tables.
When would you use hive instead of HBase?
Hive and HBase are two different Hadoop-based technologies where Hive is a SQL-like engine that runs MapReduce jobs, and on the contrary, HBase is a NoSQL key/value database on Hadoop. Hive can be used for analytical queries while HBase for real-time querying.
How does hive work?
Hive Heating tells your boiler to heat up your hot water and your home in general. The thermostat comes with a Hive Receiver, which attaches to your boiler’s circuits and relays the thermostat’s instructions to it, and the boiler’s temperature back to the thermostat.
How do you write a Pig query?
Executing Pig Script in Batch mode
- Write all the required Pig Latin statements in a single file. We can write all the Pig Latin statements and commands in a single file and save it as . pig file.
- Execute the Apache Pig script. You can execute the Pig script from the shell (Linux) as shown below. Local mode.
What type of datasets would you use Pig for?
Apache Pig is a platform utilized to analyze large datasets consisting of high level language for expressing data analysis programs along with the infrastructure for assessing these programs. Pig programs can be highly parallelized due to the virtue of which they can handle large data sets.
Which one do you use – hive or pig?
Usually, companies select one of the Hive and Pig and hardly any company uses both in a production environment. They decide it depending on the kind of data they have majorly. Mainly if a company has more historical data, they use Hive. Which one do you use in your company and personal work?
What is the difference between Apache Hive and Apache Pig?
In Hive, there is a declarative language called HiveQL which is like SQL. In Pig, there is a procedural language called Pig Latin. b. Mainly Used for Mainly, data analysts use Apache Hive. Mainly, researchers and programmers use Apache Pig. Basically, Hive allows structured data. However, Apache Pig allows both structured and semi-structured data.
What is the difference between hive component and pig component?
Basically, Hive component operates on a server side of the cluster. However, Pig server operates on the client side of the cluster. e. ETL (Extract-Transform-Load)
What is Hive and how does Facebook use it?
Facebook played an active role in the birth of Hive as Facebook uses Hadoop to handle Big Data. Hadoop uses MapReduce to process data. Previously, users needed to write lengthy, complex codes to process and analyze data. Not everyone was well-versed in Java and other complex programming languages.