Question

Hadoop 2.4.0依赖于两个不同版本的beanutils，导致sbt-assembly出现以下错误：

[error] (*:assembly) deduplicate: different file contents found in the following:
[error] .ivy2/cache/commons-beanutils/commons-beanutils/jars/commons-beanutils-1.7.0.jar:org/apache/commons/beanutils/BasicDynaBean.class
[error] .ivy2/cache/commons-beanutils/commons-beanutils-core/jars/commons-beanutils-core-1.8.0.jar:org/apache/commons/beanutils/BasicDynaBean.class

这两个依赖项都可以从Hadoop 2.4.0传递，使用How to access Ivy directly, i.e. access dependency reports or execute Ivy commands?确认

如何制作包含Hadoop 2.4.0的sbt-assembly？

UPDATE：根据要求，这是build.sbt依赖项：

libraryDependencies += "org.apache.hadoop" % "hadoop-client" % "2.4.0"

libraryDependencies += "org.apache.spark" %% "spark-core" % "1.0.0"  % "provided" exclude("org.apache.hadoop", "hadoop-client")

resolvers += "Akka Repository" at "http://repo.akka.io/releases/"

libraryDependencies += "com.amazonaws" % "aws-java-sdk" % "1.7.8"

libraryDependencies += "commons-io" % "commons-io" % "2.4"

libraryDependencies += "javax.servlet" % "javax.servlet-api" % "3.0.1" % "provided"

libraryDependencies += "com.sksamuel.elastic4s" %% "elastic4s" % "1.1.1.0"

需要exclude hadoop，因为开箱即用，Spark包含Hadoop 1，它与Hadoop 2冲突。

Answer 1

尝试将合并策略添加到build.sbt

如下所示

val meta = """META.INF(.)*""".r

mergeStrategy in assembly <<= (mergeStrategy in assembly) { (old) =>
  {
    case PathList("javax", "servlet", xs @ _*) => MergeStrategy.last
    case PathList("javax", "activation", xs @ _*) => MergeStrategy.last
    case PathList("org", "apache", xs @ _*) => MergeStrategy.last
    case PathList("com", "esotericsoftware", xs @ _*) => MergeStrategy.last
    case PathList("plugin.properties") => MergeStrategy.last
    case meta(_) => MergeStrategy.discard
    case x => old(x)
  }
}

Hadoop依赖于两个不同版本的beanutils

1 个答案: