工件在没有 sbt-dependency-graph 显示的显式依赖的情况下被拉出

Question

我几乎是空的SBT project here只有一个依赖项：

"org.apache.hadoop" % "hadoop-yarn-server-nodemanager" % "2.2.0"

正在检查 the pom 此类工件，它似乎不依赖于任何 guice-servlet 工件。

然而，当我运行 sbt dependency-tree 我看到一些不同的东西时，它确实取决于 guice-servlet 神器：

user@laptop:~/workspace/pack$ sbt dependency-tree
[info] Loading project definition from /home/user/workspace/pack/project
[info] Set current project to pack (in build file:/home/user/workspace/pack/)
[info] eu.pepot.eu:pack_2.10:0.1 [S]
[info]   +-org.apache.hadoop:hadoop-yarn-server-nodemanager:2.2.0
[info]     +-com.google.inject.extensions:guice-servlet:3.0
[info]     | +-com.google.inject:guice:3.0
[info]     |   +-aopalliance:aopalliance:1.0
[info]     |   +-javax.inject:javax.inject:1
...

我错过了什么？

Answer 1

此依赖项来自父 pom，hadoop-yarn。

hadoop-yarn-server-nodemanager 使用 hadoop-yarn-server 而使用 hadoop-yarn。这个pom有很多依赖，包括Guice。

工件在没有 sbt-dependency-graph 显示的显式依赖的情况下被拉出

Artifact is pulled without explicit dependency shown by sbt-dependency-graph

scala

guice

sbt