Compile Exchange¶

This topic describes how to compile Nebula Exchange. Users can also download the compiled .jar file directly.

Prerequisites¶

Install Maven.

Download pulsar-spark-connector_2.11, and unzip it to io/streamnative/connectors directory of the local Maven library.

Steps¶

Clone the repository nebula-spark-utils in the / directory.

git clone -b v2.5.1 https://github.com/vesoft-inc/nebula-spark-utils.git

Switch to the directory nebula-exchange.
```
cd nebula-spark-utils/nebula-exchange
```

Package Nebula Exchange.

mvn clean package -Dmaven.test.skip=true -Dgpg.skip -Dmaven.javadoc.skip=true

After the compilation is successful, you can view a directory structure similar to the following in the current directory.

.
├── README-CN.md
├── README.md
├── pom.xml
├── src
│   ├── main
│   └── test
└── target
    ├── classes
    ├── classes.timestamp
    ├── maven-archiver
    ├── nebula-exchange-2.x.y-javadoc.jar
    ├── nebula-exchange-2.x.y-sources.jar
    ├── nebula-exchange-2.x.y.jar
    ├── original-nebula-exchange-2.x.y.jar
    └── site

In the target directory, users can find the exchange-2.x.y.jar file.

Note

The JAR file version changes with the release of the Nebula Java Client. Users can view the latest version on the Releases page.

When migrating data, you can refer to configuration file target/classes/application.conf.

Failed to download the dependency package¶

If downloading dependencies fails at compile time:

Check the network Settings and ensure that the network is normal.

Modify the mirror part of Maven installation directory libexec/conf/settings.xml:

<mirror>
 <id>alimaven</id>
 <mirrorOf>central</mirrorOf>
 <name>aliyun maven</name>
 <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
</mirror>

Last update: September 1, 2021