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coral-presto

A library for analyzing, processing, and rewriting views defined in the Hive Metastore, and sharing them across multiple execution engines

License

License
GroupId

GroupId

com.linkedin.coral
ArtifactId

ArtifactId

coral-presto
Last Version

Last Version

1.0.40
Release Date

Release Date
Type

Type

jar
Description

Description

coral-presto
A library for analyzing, processing, and rewriting views defined in the Hive Metastore, and sharing them across multiple execution engines
Project URL

Project URL

https://github.com/linkedin/coral
Source Code Management

Source Code Management

https://github.com/linkedin/coral.git

Download coral-presto

Filename Size
coral-presto-1.0.40.pom
coral-presto-1.0.40.jar 42 KB
coral-presto-1.0.40-sources.jar 29 KB
coral-presto-1.0.40-javadoc.jar 63 KB
Browse

How to add to project

<!-- https://jarcasting.com/artifacts/com.linkedin.coral/coral-presto/ -->
<dependency>
    <groupId>com.linkedin.coral</groupId>
    <artifactId>coral-presto</artifactId>
    <version>1.0.40</version>
</dependency>
// https://jarcasting.com/artifacts/com.linkedin.coral/coral-presto/
implementation 'com.linkedin.coral:coral-presto:1.0.40'
// https://jarcasting.com/artifacts/com.linkedin.coral/coral-presto/
implementation ("com.linkedin.coral:coral-presto:1.0.40")
'com.linkedin.coral:coral-presto:jar:1.0.40'
<dependency org="com.linkedin.coral" name="coral-presto" rev="1.0.40">
  <artifact name="coral-presto" type="jar" />
</dependency>
@Grapes(
@Grab(group='com.linkedin.coral', module='coral-presto', version='1.0.40')
)
libraryDependencies += "com.linkedin.coral" % "coral-presto" % "1.0.40"
[com.linkedin.coral/coral-presto "1.0.40"]

Dependencies

compile (3)

Group / Artifact Type Version
com.google.code.gson : gson jar 2.8.1
com.google.code.findbugs : jsr305 jar 3.0.2
com.linkedin.coral : coral-hive jar 1.0.40

Project Modules

There are no modules declared in this project.

Coral

Coral is a library for analyzing, processing, and rewriting views defined in the Hive Metastore, and sharing them across multiple execution engines. It performs SQL translations to enable views expressed in HiveQL (and potentially other languages) to be accessible in engines such as Trino (formerly PrestoSQL), Apache Spark, and Apache Pig. Coral not only translates view definitions between different SQL/non-SQL dialects, but also rewrites expressions to produce semantically equivalent ones, taking into account the semantics of the target language or engine. For example, it automatically composes new built-in expressions that are equivalent to each built-in expression in the source view definition. Additionally, it integrates with Transport UDFs to enable translating and executing user-defined functions (UDFs) across Hive, Trino, Spark, and Pig. Coral is under active development. Currently, we are looking into expanding the set of input view language APIs beyond HiveQL, and implementing query rewrite algorithms for data governance and query optimization.

Modules

Coral consists of following modules:

  • Coral-Hive: Converts definitions of Hive views with UDFs to equivalent view logical plan.
  • Coral-Trino: Converts view logical plan to Trino (formerly PrestoSQL) SQL.
  • Coral-Spark: Converts view logical plan to Spark SQL.
  • Coral-Pig: Converts view logical plan to Pig-latin.
  • Coral-Schema: Derives Avro schema of view using view logical plan and input Avro schemas of base tables.
  • Coral-Spark-Plan: Converts Spark plan strings to equivalent logical plan (in progress).

How to Build

Clone the repository:

git clone https://github.com/linkedin/coral.git

Build:

./gradlew build

Contributing

The project is under active development and we welcome contributions of different forms. Please see the Contribution Agreement.

Community

  • Join the chat on Slack!

Resources

com.linkedin.coral

LinkedIn

Versions

Version
1.0.40
1.0.39
1.0.38
1.0.37
1.0.36
1.0.35
1.0.34
1.0.33
1.0.25
1.0.18
1.0.17
1.0.16
1.0.15
1.0.14
1.0.13
1.0.12
1.0.11
1.0.10
1.0.9
1.0.8
1.0.7
1.0.6
1.0.5