[英]sbt-assembly behaviour with jars and Spark
我对 sbt 程序集的行为有疑问:
当我使用此配置时:
assemblyMergeStrategy in assembly := {
case PathList("org", "aopalliance", xs@_*) => MergeStrategy.last
case PathList("javax", "inject", xs@_*) => MergeStrategy.last
case PathList("javax", "servlet", xs@_*) => MergeStrategy.last
case PathList("javax", "activation", xs@_*) => MergeStrategy.last
case PathList("org", "apache", xs@_*) => MergeStrategy.last
case PathList("com", "google", xs@_*) => MergeStrategy.last
case PathList("com", "esotericsoftware", xs@_*) => MergeStrategy.last
case PathList("com", "codahale", xs@_*) => MergeStrategy.last
case PathList("com", "yammer", xs@_*) => MergeStrategy.last
case "about.html" => MergeStrategy.rename
case "META-INF/ECLIPSEF.RSA" => MergeStrategy.last
case "META-INF/MANIFEST.MF" => MergeStrategy.discard
case "META-INF/mailcap" => MergeStrategy.last
case "META-INF/mimetypes.default" => MergeStrategy.last
case "plugin.properties" => MergeStrategy.last
case "log4j.properties" => MergeStrategy.last
case "git.properties" => MergeStrategy.discard
case x => MergeStrategy.first
case x =>
val oldStrategy = (assemblyMergeStrategy in assembly).value
oldStrategy(x)
}
我的输出 jar 大约为 109MB,它包含 spark 库,即使我将其设置为提供的
但是当我使用这个时:
assemblyMergeStrategy in assembly := {
case "src/test/resources/library.properties" => MergeStrategy.discard
case PathList("META-INF", xs@_*) => MergeStrategy.discard
case x => MergeStrategy.first
}
我的 Jar 大约 10MB。 你知道为什么吗?
在第二个策略中,您将从依赖项 jar 中丢弃所有 META-INF 文件夹(因此这些文件不会复制到远 jar 上)
在任何情况下,您都可以解压缩两个 jar 文件并检查内部内容以进行比较
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