使用Maven構建Hadoop時出錯

Question

我正在使用Maven構建Hadoop項目。 我面臨以下錯誤

[錯誤]無法對項目hadoop-minikdc執行目標：無法解決項目org.apache.hadoop：hadoop-minikdc：jar：3.0.0-SNAPSHOT的依賴項：找不到org.apache.directory.jdbm：apacheds- jdbm1：包：2.0.0-M2在https://repo.maven.apache.org/maven2在本地倉庫被緩存，分辨率將不會被重新嘗試，直到中央的更新間隔已過或更新被迫

的pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-    4.0.0.xsd">
  <parent>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-project</artifactId>
<version>3.0.0-SNAPSHOT</version>
<relativePath>../../hadoop-project</relativePath>
  </parent>
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.apache.hadoop</groupId>
  <artifactId>hadoop-minikdc</artifactId>
  <version>3.0.0-SNAPSHOT</version>
  <description>Apache Hadoop MiniKDC</description>
  <name>Apache Hadoop MiniKDC</name>
  <packaging>jar</packaging>
<dependencies>
<dependency>
  <groupId>commons-io</groupId>
  <artifactId>commons-io</artifactId>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>org.apache.directory.server</groupId>
  <artifactId>apacheds-core-api</artifactId>
  <version>2.0.0-M15</version>
  <scope>compile</scope>
  <exclusions>
    <exclusion>
      <groupId>org.apache.directory.api</groupId>
      <artifactId>api-ldap-schema-data</artifactId>
    </exclusion>
  </exclusions>
</dependency>
<dependency>
  <groupId>org.apache.directory.server</groupId>
  <artifactId>apacheds-interceptor-kerberos</artifactId>
  <version>2.0.0-M15</version>
  <scope>compile</scope>
  <exclusions>
    <exclusion>
      <groupId>org.apache.directory.api</groupId>
      <artifactId>api-ldap-schema-data</artifactId>
    </exclusion>
  </exclusions>
</dependency>
<dependency>
  <groupId>org.apache.directory.server</groupId>
  <artifactId>apacheds-protocol-shared</artifactId>
  <version>2.0.0-M15</version>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>org.apache.directory.server</groupId>
  <artifactId>apacheds-protocol-kerberos</artifactId>
  <version>2.0.0-M15</version>
  <scope>compile</scope>
  <exclusions>
  </exclusions>
</dependency>
<dependency>
  <groupId>org.apache.directory.server</groupId>
  <artifactId>apacheds-ldif-partition</artifactId>
  <version>2.0.0-M15</version>
  <scope>compile</scope>
  <exclusions>
    <exclusion>
      <groupId>org.apache.directory.api</groupId>
      <artifactId>api-ldap-schema-data</artifactId>
    </exclusion>
  </exclusions>
</dependency>
<dependency>
  <groupId>org.apache.directory.server</groupId>
  <artifactId>apacheds-mavibot-partition</artifactId>
  <version>2.0.0-M15</version>
  <scope>compile</scope>
  <exclusions>
    <exclusion>
      <groupId>org.apache.directory.api</groupId>
      <artifactId>api-ldap-schema-data</artifactId>
    </exclusion>
  </exclusions>
</dependency>
<dependency>
  <groupId>org.apache.directory.api</groupId>
  <artifactId>api-all</artifactId>
  <version>1.0.0-M20</version>
  <scope>compile</scope>
  <exclusions>
    <exclusion>
      <groupId>xml-apis</groupId>
      <artifactId>xml-apis</artifactId>
    </exclusion>
    <exclusion>
      <groupId>xpp3</groupId>
      <artifactId>xpp3</artifactId>
    </exclusion>
    <exclusion>
      <groupId>dom4j</groupId>
      <artifactId>dom4j</artifactId>
    </exclusion>
  </exclusions>
</dependency>
<dependency>
  <groupId>org.apache.directory.server</groupId>
  <artifactId>apacheds-jdbm-partition</artifactId>
  <version>2.0.0-M15</version>
  <scope>compile</scope>
  <exclusions>
    <exclusion>
      <groupId>org.apache.directory.api</groupId>
      <artifactId>api-ldap-schema-data</artifactId>
    </exclusion>
  </exclusions>
</dependency>
<dependency>
  <groupId>org.apache.directory.server</groupId>
  <artifactId>apacheds-protocol-ldap</artifactId>
  <version>2.0.0-M15</version>
  <scope>compile</scope>
  <exclusions>
    <exclusion>
      <groupId>org.apache.directory.api</groupId>
      <artifactId>api-ldap-schema-data</artifactId>
    </exclusion>
  </exclusions>
</dependency>
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-log4j12</artifactId>
  <scope>compile</scope>
</dependency>
<dependency>
  <groupId>junit</groupId>
  <artifactId>junit</artifactId>
  <scope>compile</scope>
</dependency>
 </dependencies>
</project>

誰能幫我嗎？

Answer 1

這與Maven用於更新本地存儲庫中的依賴項的更新策略有關。 一種解決方案是嘗試在本地存儲庫中手動刪除包含依賴項org.apache.directory.jdbm:apacheds-jdbm1:bundle:2.0.0-M2 ，然后重新啟動構建。

您還可以通過將-U傳遞給Maven來強制更新所有依賴項，例如：

mvn clean install -U

Answer 2

如果此依賴關系是私有的，則需要在〜/ .m2 / settings.xml中向您的maven設置文件添加相關信息。

Answer 3

從您的陳述中，您說您無法解決項目org.apache.hadoop：hadoop-minikdc：jar：3.0.0-SNAPSHOT的依賴項。 好的，我認為這是您錯誤的Maven代理，您無法下載此jar。 請檢查您的代理，然后再次檢查。 請轉到目錄。 〜/ .m2 / settings.xml來修改您的設置。

像這樣

<proxy>
  <id>optional</id>
  <active>true</active>
  <protocol>http</protocol>
  <username></username>
  <password></password>
  <host>child-prc.intel.com</host>
  <port>913</port>
  <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
</proxy>