在插件库中找不到插件 - 当我的公司Nexus停机时如何解决问题？ [英] Plugin not found in plugin repository - How fix an issue when my company Nexus is down?

问题描述

我试图在本地执行 Hadoop ，当我执行时

  $ mvn -U clean install -Pdist -Dtar -Ptest-patch 
  

如上所述 - http://wiki.apache.org/hadoop/HowToSetupYourDevelopmentEnvironment

  [错误]从版本库解析插件'org.apache.maven.plugins：maven-javadoc-plugin'时出错[local（/Users/me/.m2/存储库），nexus（http：//beefy.myorg.local：8081 / nexus / content / groups / public）]：在任何插件库中找不到插件 - > [Help 1] 
  

当我在控制台上看到日志时，我看到

  [INFO] Apache Hadoop分发
 [INFO] Apache Hadoop客户端
 [INFO] Apache Hadoop迷你集群
 [INFO] ] 
 [信息] ------------------------------------------ ------------------------------ 
 [INFO]构建Apache Hadoop主3.0.0-SNAPSHOT 
 [INFO] ----------------------------------------------- ------------------------- 
下载：http：//beefy.myorg.local：8081 / nexus / content / groups / public /org/apache/maven/plugins/maven-javadoc-plugin/maven-metadata.xml 
 [警告]无法传输元数据org.apache.maven.plugins：maven-javadoc-plugin / maven-metadata.xml从/到nexus（http：//beefy.myorg.local：8081 / nexus / content / groups / public）：错误传输文件：操作超时
  

由于我公司的 nexus 有问题，有什么方法可以解决这让hadoop构建？

$ b 更新

在添加<$ c
$ b

  [错误]无法执行目标项目hadoop：无法解决项目groupId的依赖关系：hadoop：jar：master-SNAPSHOT：无法收集[org.apache.hadoop：hadoop-core：jar：0.20.2（compile）]的依赖关系：无法读取artifact描述符org.apache.hadoop：hadoop-core：jar：0.20.2：无法传输工件org.apache.hadoop：hadoop-core：pom：0.20.2 from / to nexus（http：//beefy.myorg。 local：8081 / nexus / content / groups / public）：传输文件时出错：操作超时 - > [Help 1] 
  

，这是 pom.xml

 < repositories> 
< repository> 
< id> mvnrepository< / id> 
< url> http：//mvnrepository.com/artifact/< / url> 
< / repository> 
 
< / repositories> 
<依赖关系> 
< dependency> 
< groupId> org.apache.hadoop< / groupId> 
< artifactId> hadoop-core< / artifactId> 
< version> 0.20.2< / version> 
< /依赖关系> 
< /依赖关系> 
  

解决方案

如果您可以访问互联网，只需声明一个新的Maven仓库（在你的POM中，或在你的settings.xml中）：

 < repositories> 
< repository> 
< id> your-internal-repo< / id> 
< url> http：//beefy.myorg.local：8081 / nexus / content /< / url> 
< / repository> 
 
< repository> 
< id> mvnrepository< / id> 
< url> http：//mvnrepository.com/artifact/< / url> 
< / repository> 
< / repositories> 
  

此配置将首先尝试从您的存储库下载，然后失败。 ）

确实，您的内部存储库是一个代理，可以缓存远程存储库（mvnrepository ）。

I am trying to buld Hadoop locally and when I do

$ mvn  -U clean install -Pdist -Dtar -Ptest-patch

as mentioned - http://wiki.apache.org/hadoop/HowToSetupYourDevelopmentEnvironment

[ERROR] Error resolving version for plugin 'org.apache.maven.plugins:maven-javadoc-plugin' from the repositories [local (/Users/me/.m2/repository), nexus (http://beefy.myorg.local:8081/nexus/content/groups/public)]: Plugin not found in any plugin repository -> [Help 1]

As I see logs on console, I see

[INFO] Apache Hadoop Distribution
[INFO] Apache Hadoop Client
[INFO] Apache Hadoop Mini-Cluster
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Apache Hadoop Main 3.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
Downloading: http://beefy.myorg.local:8081/nexus/content/groups/public/org/apache/maven/plugins/maven-javadoc-plugin/maven-metadata.xml
[WARNING] Could not transfer metadata org.apache.maven.plugins:maven-javadoc-plugin/maven-metadata.xml from/to nexus (http://beefy.myorg.local:8081/nexus/content/groups/public): Error transferring file: Operation timed out

Since nexus in my company is down, is there any way I can resolve this and let hadoop build?

UPDATE

After adding the repository in my project pom, it still fails

[ERROR] Failed to execute goal on project hadoop: Could not resolve dependencies for project groupId:hadoop:jar:master-SNAPSHOT: Failed to collect dependencies for [org.apache.hadoop:hadoop-core:jar:0.20.2 (compile)]: Failed to read artifact descriptor for org.apache.hadoop:hadoop-core:jar:0.20.2: Could not transfer artifact org.apache.hadoop:hadoop-core:pom:0.20.2 from/to nexus (http://beefy.myorg.local:8081/nexus/content/groups/public): Error transferring file: Operation timed out -> [Help 1]

and this is pom.xml

  <repositories>
        <repository>
            <id>mvnrepository</id>
            <url>http://mvnrepository.com/artifact/</url>
        </repository>

    </repositories>
    <dependencies>
        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-core</artifactId>
            <version>0.20.2</version>
        </dependency>
    </dependencies>

解决方案

If you have access to internet, simply declare a new maven repository (in you pom, or in you settings.xml) :

  <repositories>
    <repository>
      <id>your-internal-repo</id>
      <url>http://beefy.myorg.local:8081/nexus/content/</url>
    </repository>

    <repository>
      <id>mvnrepository</id>
      <url>http://mvnrepository.com/artifact/</url>
    </repository>
  </repositories>

This configuration will first try to download from you repository, then fail. And maven will try all declared repositories, until it works .... or not :)

Indeed, your internal repository is a proxy, that caches the distant one (mvnrepository).

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