在sbt依赖org.apache.hadoop软件包离线编译时遇到了很多麻烦。
一个简单的build.sbt：
name := "Test"
version := "1.0"
scalaVersion := "2.10.4"
libraryDependencies += "org.apache.hadoop" % "hadoop-yarn-api" % "2.2.0"
在线工作正常但在离线运行时出现以下错误，而包在常春藤缓存中（在〜/ ivy2 / cache / org.apache.hadoop /...):
[info] Loading project definition from /home/martin/Dev/S/project
[info] Set current project to Test (in build file:/home/martin/Dev/S/)
[info] Updating {file:/home/martin/Dev/S/}s...
[info] Resolving org.apache.hadoop#hadoop-yarn-api;2.2.0 ...
[warn] Host repo1.maven.org not found. url=https://repo1.maven.org/maven2/org/apache/hadoop/hadoop-yarn-api/2.2.0/hadoop-yarn-api-2.2.0.pom
[info] You probably access the destination server through a proxy server that is not well configured.
[warn] module not found: org.apache.hadoop#hadoop-yarn-api;2.2.0
[warn] ==== local: tried
[warn] /home/martin/.ivy2/local/org.apache.hadoop/hadoop-yarn-api/2.2.0/ivys/ivy.xml
[warn] ==== public: tried
[warn] https://repo1.maven.org/maven2/org/apache/hadoop/hadoop-yarn-api/2.2.0/hadoop-yarn-api-2.2.0.pom
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.apache.hadoop#hadoop-yarn-api;2.2.0: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Unresolved dependencies path:
[warn] org.apache.hadoop:hadoop-yarn-api:2.2.0 (/home/martin/Dev/S/build.sbt#L15-16)
[warn] +- test:test_2.10:1.0
sbt.ResolveException: unresolved dependency: org.apache.hadoop#hadoop-yarn-api;2.2.0: not found
...
[error] (*:update) sbt.ResolveException: unresolved dependency: org.apache.hadoop#hadoop-yarn-api;2.2.0: not found
[error] Total time: 3 s, completed Apr 26, 2015 2:46:58 PM
添加以下解析器无济于事：
resolvers += Resolver.file("Local repo", file(System.getProperty("user.home") + "/.ivy2/cache")) (Resolver.ivyStylePatterns)
它只是添加
[warn] ==== Local repo: tried
[warn] /home/martin/.ivy2/cache/org.apache.hadoop/hadoop-yarn-api/2.2.0/ivys/ivy.xml
文件存在，但命名为ivy-2.2.0.xml，而不是2.2.0 / ivys / ivy.xml
所以我尝试添加
resolvers += Resolver.file("Local repo 2", file(System.getProperty("user.home") + "/.ivy2/cache")) ( Patterns("[organisation]/[module]/[artifact]-[revision].[ext]") )
强制命名约定，但然后在
下查找[warn] ==== Local repo 2: tried
[warn] /home/martin/.ivy2/cache/org/apache/hadoop/hadoop-yarn-api/ivy-2.2.0.xml
即使根据sbt doc [organization]应该是org.apache.hadoop而不是org / apache / hadoop
所以最后作为最后的手段，我添加了一个丑陋的
resolvers += Resolver.file("Local hadoop cache", file(System.getProperty("user.home") + "/.ivy2/cache")) ( Patterns("org.apache.hadoop/[module]/[artifact]-[revision].[ext]") )
并且它找到了一些东西，但仍对它不满意：
[info] Loading project definition from /home/martin/Dev/S/project
[info] Set current project to Test (in build file:/home/martin/Dev/S/)
[info] Updating {file:/home/martin/Dev/S/}s...
[info] Resolving org.apache.hadoop#hadoop-yarn-api;2.2.0 ...
[warn] Host repo1.maven.org not found. url=https://repo1.maven.org/maven2/org/apache/hadoop/hadoop-yarn-api/2.2.0/hadoop-yarn-api-2.2.0.pom
[info] You probably access the destination server through a proxy server that is not well configured.
[warn] xml parsing: ivy-2.2.0.xml.original:18:69: schema_reference.4: Failed to read schema document 'http://maven.apache.org/xsd/maven-4.0.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
[warn] xml parsing: ivy-2.2.0.xml.original:19:11: schema_reference.4: Failed to read schema document 'http://maven.apache.org/xsd/maven-4.0.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
[warn] xml parsing: ivy-2.2.0.xml.original:20:17: schema_reference.4: Failed to read schema document 'http://maven.apache.org/xsd/maven-4.0.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
[warn] xml parsing: ivy-2.2.0.xml.original:21:14: schema_reference.4: Failed to read schema document 'http://maven.apache.org/xsd/maven-4.0.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
[warn] xml parsing: ivy-2.2.0.xml.original:22:14: schema_reference.4: Failed to read schema document 'http://maven.apache.org/xsd/maven-4.0.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
[warn] xml parsing: ivy-2.2.0.xml.original:24:17: schema_reference.4: Failed to read schema document 'http://maven.apache.org/xsd/maven-4.0.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
[warn] xml parsing: ivy-2.2.0.xml.original:25:12: schema_reference.4: Failed to read schema document 'http://maven.apache.org/xsd/maven-4.0.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
...
我不知道接下来要尝试什么。如果我将.ivy2 / cache /目录复制到脱机计算机，那么构建离线工作对于我试过的任何其他依赖项都很好。它只是一堆导致此问题的org.apache.hadoop依赖项。 .ivy2 / cache / org.apache.hadoop下的结构和文件看起来与其他运行良好的依赖项中的结构和文件相同。
添加
offline := true
也没有帮助。
使用sbt 0.13.7
谢谢！
答案 0 :(得分：2)
似乎是一个sbt bug。我在 sbt 0.13.8 时遇到了同样的问题，但他们转而使用 0.13.9-RC3 并清除~/.ivy2