我使用sbt assembly得到这些错误。
我正在使用Spark，这似乎是这个问题的根源。
val Spark = Seq(
"org.apache.spark" %% "spark-core" % sparkVersion,
"org.apache.spark" %% "spark-sql" % sparkVersion,
"org.apache.spark" %% "spark-streaming" % sparkVersion
)
错误：
[error] 12 errors were encountered during merge
[trace] Stack trace suppressed: run last coreBackend/*:assembly for the full output.
[trace] Stack trace suppressed: run last core/*:assembly for the full output.
[trace] Stack trace suppressed: run last commons/*:assembly for the full output.
[error] (coreBackend/*:assembly) deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.osgi/org.osgi.core/org.osgi.core-4.3.1.jar:OSGI-OPT/bnd.bnd
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.osgi/org.osgi.compendium/org.osgi.compendium-4.3.1.jar:OSGI-OPT/bnd.bnd
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/bundles/com.google.guava/guava/guava-18.0.jar:com/google/common/base/Absent.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-network-common_2.11/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Absent.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/bundles/com.google.guava/guava/guava-18.0.jar:com/google/common/base/Function.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-network-common_2.11/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Function.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/bundles/com.google.guava/guava/guava-18.0.jar:com/google/common/base/Optional$1$1.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-network-common_2.11/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Optional$1$1.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/bundles/com.google.guava/guava/guava-18.0.jar:com/google/common/base/Optional$1.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-network-common_2.11/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Optional$1.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/bundles/com.google.guava/guava/guava-18.0.jar:com/google/common/base/Optional.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-network-common_2.11/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Optional.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/bundles/com.google.guava/guava/guava-18.0.jar:com/google/common/base/Present.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-network-common_2.11/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Present.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/bundles/com.google.guava/guava/guava-18.0.jar:com/google/common/base/Supplier.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-network-common_2.11/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Supplier.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.hadoop/hadoop-yarn-common/hadoop-yarn-common-2.2.0.jar:org/apache/hadoop/yarn/factories/package-info.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.hadoop/hadoop-yarn-api/hadoop-yarn-api-2.2.0.jar:org/apache/hadoop/yarn/factories/package-info.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.hadoop/hadoop-yarn-common/hadoop-yarn-common-2.2.0.jar:org/apache/hadoop/yarn/factory/providers/package-info.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.hadoop/hadoop-yarn-api/hadoop-yarn-api-2.2.0.jar:org/apache/hadoop/yarn/factory/providers/package-info.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.hadoop/hadoop-yarn-common/hadoop-yarn-common-2.2.0.jar:org/apache/hadoop/yarn/util/package-info.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.hadoop/hadoop-yarn-api/hadoop-yarn-api-2.2.0.jar:org/apache/hadoop/yarn/util/package-info.class
[error] deduplicate: different file contents found in the following:
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-core_2.11/spark-core_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-launcher_2.11/spark-launcher_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.spark-project.spark/unused/unused-1.0.0.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-network-common_2.11/spark-network-common_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-network-shuffle_2.11/spark-network-shuffle_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-unsafe_2.11/spark-unsafe_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-sql_2.11/spark-sql_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-catalyst_2.11/spark-catalyst_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Volumes/COYOTE/Developer/tibra/lib_managed/jars/org.apache.spark/spark-streaming_2.11/spark-streaming_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] (core/*:assembly) deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/org.osgi/org.osgi.core/jars/org.osgi.core-4.3.1.jar:OSGI-OPT/bnd.bnd
[error] /Users/bryan/.ivy2/cache/org.osgi/org.osgi.compendium/jars/org.osgi.compendium-4.3.1.jar:OSGI-OPT/bnd.bnd
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/com.google.guava/guava/bundles/guava-18.0.jar:com/google/common/base/Absent.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-network-common_2.11/jars/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Absent.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/com.google.guava/guava/bundles/guava-18.0.jar:com/google/common/base/Function.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-network-common_2.11/jars/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Function.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/com.google.guava/guava/bundles/guava-18.0.jar:com/google/common/base/Optional$1$1.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-network-common_2.11/jars/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Optional$1$1.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/com.google.guava/guava/bundles/guava-18.0.jar:com/google/common/base/Optional$1.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-network-common_2.11/jars/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Optional$1.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/com.google.guava/guava/bundles/guava-18.0.jar:com/google/common/base/Optional.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-network-common_2.11/jars/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Optional.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/com.google.guava/guava/bundles/guava-18.0.jar:com/google/common/base/Present.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-network-common_2.11/jars/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Present.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/com.google.guava/guava/bundles/guava-18.0.jar:com/google/common/base/Supplier.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-network-common_2.11/jars/spark-network-common_2.11-1.5.1.jar:com/google/common/base/Supplier.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/org.apache.hadoop/hadoop-yarn-common/jars/hadoop-yarn-common-2.2.0.jar:org/apache/hadoop/yarn/factories/package-info.class
[error] /Users/bryan/.ivy2/cache/org.apache.hadoop/hadoop-yarn-api/jars/hadoop-yarn-api-2.2.0.jar:org/apache/hadoop/yarn/factories/package-info.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/org.apache.hadoop/hadoop-yarn-common/jars/hadoop-yarn-common-2.2.0.jar:org/apache/hadoop/yarn/factory/providers/package-info.class
[error] /Users/bryan/.ivy2/cache/org.apache.hadoop/hadoop-yarn-api/jars/hadoop-yarn-api-2.2.0.jar:org/apache/hadoop/yarn/factory/providers/package-info.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/org.apache.hadoop/hadoop-yarn-common/jars/hadoop-yarn-common-2.2.0.jar:org/apache/hadoop/yarn/util/package-info.class
[error] /Users/bryan/.ivy2/cache/org.apache.hadoop/hadoop-yarn-api/jars/hadoop-yarn-api-2.2.0.jar:org/apache/hadoop/yarn/util/package-info.class
[error] deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-core_2.11/jars/spark-core_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-launcher_2.11/jars/spark-launcher_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Users/bryan/.ivy2/cache/org.spark-project.spark/unused/jars/unused-1.0.0.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-network-common_2.11/jars/spark-network-common_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-network-shuffle_2.11/jars/spark-network-shuffle_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-unsafe_2.11/jars/spark-unsafe_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-sql_2.11/jars/spark-sql_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-catalyst_2.11/jars/spark-catalyst_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] /Users/bryan/.ivy2/cache/org.apache.spark/spark-streaming_2.11/jars/spark-streaming_2.11-1.5.1.jar:org/apache/spark/unused/UnusedStubClass.class
[error] (commons/*:assembly) deduplicate: different file contents found in the following:
[error] /Users/bryan/.ivy2/cache/org.osgi/org.osgi.core/jars/org.osgi.core-4.3.1.jar:OSGI-OPT/bnd.bnd
[error] /Users/bryan/.ivy2/cache/org.osgi/org.osgi.compendium/jars/org.osgi.compendium-4.3.1.jar:OSGI-OPT/bnd.bnd
我在这里尝试了所有推荐的解决方案，但没有成功。
sbt程序集：发现重复数据消除错误
重复公共验证器-sbt程序集
spark+sbt组件："；重复数据消除：在以下"中找到不同的文件内容；
这不是问题的确切答案，但它是一种变通方法。
我希望这能节省几百工时
使用sbt-native-packager而不是sbt-assembly。
添加到plugins.sbt:
addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.0.0")
在您的build.sbt 中
enablePlugins(JavaAppPackaging)
enablePlugins(UniversalPlugin)
要为多个Scala版本构建文件，请使用+
+ universal:packageBin
输出将告诉您文件是在哪里创建的。
不幸的是，生成的jar被压缩了。这不是一个肥罐子。(生成一个脂肪罐需要sbt-assembly，它也有同样的问题(
为了克服这一点，我制作了一个简单的脚本(在SBT中(，解压缩生成的文件并将jar路径写入一个文件，这样我就可以轻松地构建Spark提交脚本。
packageBin in TxtFormat := {
val zippedJar = "core-backend-1.0.zip"
val basePath = target.value / "universal"
// Unzip to folder of JARs
IO.unzip(basePath / zippedJar, basePath)
val fileMappings = (mappings in Universal).value
val sparkScriptOut = basePath / s"${packageName.value}.txt"
// append all mappings to the list
fileMappings foreach {
case (file, name) => IO.append(sparkScriptOut, s"core-backend-1.0/$name${IO.Newline}")
}
sparkScriptOut
}
在构建zip之后，使用它来执行任务：
+ txtFormat:packageBin
assemblyMergeStrategy in assembly := {
case PathList("org", "apache", xs @ _*) => MergeStrategy.last
case PathList("com", "google", xs @ _*) => MergeStrategy.last
case x =>
val oldStrategy = (assemblyMergeStrategy in assembly).value
oldStrategy(x)
}
这对我有用。
Spark依赖项应由集群提供，添加"provided"：
val Spark = Seq(
"org.apache.spark" %% "spark-core" % sparkVersion % Provided,
"org.apache.spark" %% "spark-sql" % sparkVersion % Provided,
"org.apache.spark" %% "spark-streaming" % sparkVersion % Provided
)
我知道这是一个老问题，但到目前为止给出的解决方案都无法解决我遇到的问题。
似乎在某些情况下，未"提供"的jar依赖于已提供的jar。如果可传递依赖项拉入具有冲突内容的jar，您可以看到同样的错误。在某些情况下，将这些jar添加为标记为"provided"的依赖项并不能在生成程序集时解决它们之间的冲突。我找到的唯一解决方案是明确地将它们从程序集中排除，如下所示。
assemblyExcludedJars in assembly := {
val cp = (fullClasspath in assembly).value
cp filter { el =>
(el.data.getName == "unused-1.0.0.jar") ||
(el.data.getName == "spark-tags_2.11-2.1.0.jar")
}
}