TL; DR
我試圖遮蔭一個版本的akka
庫,並與我的應用程序中捆綁它(能夠運行一個spray-can
服務器上的CDH 5.7
版本的Spark 1.6
)。着色過程messes up akka
's default configuration,並且在爲着色的akka
手動提供akka
的reference.conf
的單獨版本之後,它仍然看起來像2個版本以某種方式混淆。斯卡拉+ SBT - 如何配置reference.conf的陰影阿卡庫
是否着色akka
已知會導致問題的版本?我究竟做錯了什麼?
背景
我有一個Scala
/Spark
應用目前Spark 1.6.1
獨立運行。該應用程序使用spray 1.3.3
運行spray-can
http服務器,該服務器需要akka 2.3.9
(Spark 1.6.1
獨立包含兼容的akka 2.3.11
)。
我想給應用程序遷移到運行CDH 5.7
版本的Spark 1.6
新Cloudera
基於Spark
集羣。問題是,Spark 1.6
在CDH 5.7
與akka 2.2.3
捆綁在一起,這不足以使spray 1.3.3
正常工作。
嘗試性解決方案
繼this post的建議,我決定遮陽akka 2.3.9
和捆綁它與我的應用程序一起。雖然這次我偶然發現了一個新問題 - akka
在reference.conf
文件中定義了它的默認配置,它應該位於應用程序的類路徑中。由於sbt-assembly
的known issue的着色功能,看起來陰影的akka
庫需要單獨的配置。
所以,我結束了陰影akka
具有以下遮陽規則:
ShadeRule.rename("akka.**" -> "[email protected]")
.inLibrary("com.typesafe.akka" % "akka-actor_2.10" % "2.3.9")
.inAll
,並且包含附加reference.conf
文件在我的項目,這是相同的akka
的原始reference.conf
,但與所有出現「 akka「替換爲」akka_2_3_9_shade「。
但現在,似乎Spark
-provided akka
獲取與陰影akka
混合起來弄好了,因爲我發現了以下錯誤:
Exception in thread "main" java.lang.IllegalArgumentException: Cannot instantiate MailboxType [akka.dispatch.UnboundedMailbox], defined in [akka.actor.default-mailbox], make sure it has a public constructor with [akka.actor.ActorSystem.Settings, com.typesafe.config.Config] parameters
at akka_2_3_9_shade.dispatch.Mailboxes$$anonfun$1.applyOrElse(Mailboxes.scala:197)
at akka_2_3_9_shade.dispatch.Mailboxes$$anonfun$1.applyOrElse(Mailboxes.scala:195)
at scala.runtime.AbstractPartialFunction.apply(AbstractPartialFunction.scala:33)
at scala.util.Failure$$anonfun$recover$1.apply(Try.scala:185)
at scala.util.Try$.apply(Try.scala:161)
at scala.util.Failure.recover(Try.scala:185)
at akka_2_3_9_shade.dispatch.Mailboxes.lookupConfiguration(Mailboxes.scala:195)
at akka_2_3_9_shade.dispatch.Mailboxes.lookup(Mailboxes.scala:78)
at akka_2_3_9_shade.actor.LocalActorRefProvider.akka$actor$LocalActorRefProvider$$defaultMailbox$lzycompute(ActorRefProvider.scala:561)
at akka_2_3_9_shade.actor.LocalActorRefProvider.akka$actor$LocalActorRefProvider$$defaultMailbox(ActorRefProvider.scala:561)
at akka_2_3_9_shade.actor.LocalActorRefProvider$$anon$1.<init>(ActorRefProvider.scala:568)
at akka_2_3_9_shade.actor.LocalActorRefProvider.rootGuardian$lzycompute(ActorRefProvider.scala:564)
at akka_2_3_9_shade.actor.LocalActorRefProvider.rootGuardian(ActorRefProvider.scala:563)
at akka_2_3_9_shade.actor.LocalActorRefProvider.init(ActorRefProvider.scala:618)
at akka_2_3_9_shade.actor.ActorSystemImpl.liftedTree2$1(ActorSystem.scala:619)
at akka_2_3_9_shade.actor.ActorSystemImpl._start$lzycompute(ActorSystem.scala:616)
at akka_2_3_9_shade.actor.ActorSystemImpl._start(ActorSystem.scala:616)
at akka_2_3_9_shade.actor.ActorSystemImpl.start(ActorSystem.scala:633)
at akka_2_3_9_shade.actor.ActorSystem$.apply(ActorSystem.scala:142)
at akka_2_3_9_shade.actor.ActorSystem$.apply(ActorSystem.scala:109)
at akka_2_3_9_shade.actor.ActorSystem$.apply(ActorSystem.scala:100)
at MyApp.api.Boot$delayedInit$body.apply(Boot.scala:45)
at scala.Function0$class.apply$mcV$sp(Function0.scala:40)
at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
at scala.App$$anonfun$main$1.apply(App.scala:71)
at scala.App$$anonfun$main$1.apply(App.scala:71)
at scala.collection.immutable.List.foreach(List.scala:318)
at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:32)
at scala.App$class.main(App.scala:71)
at MyApp.api.Boot$.main(Boot.scala:28)
at MyApp.api.Boot.main(Boot.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.lang.ClassCastException: interface akka_2_3_9_shade.dispatch.MailboxType is not assignable from class akka.dispatch.UnboundedMailbox
at akka_2_3_9_shade.actor.ReflectiveDynamicAccess$$anonfun$getClassFor$1.apply(DynamicAccess.scala:69)
at akka_2_3_9_shade.actor.ReflectiveDynamicAccess$$anonfun$getClassFor$1.apply(DynamicAccess.scala:66)
at scala.util.Try$.apply(Try.scala:161)
at akka_2_3_9_shade.actor.ReflectiveDynamicAccess.getClassFor(DynamicAccess.scala:66)
at akka_2_3_9_shade.actor.ReflectiveDynamicAccess.CreateInstanceFor(DynamicAccess.scala:84)
... 34 more
從我的應用程序的Boot.scala
文件中的相關代碼如下:
[45] implicit val system = ActorSystem()
...
[48] val service = system.actorOf(Props[MyAppApiActor], "MyApp.Api")
...
[52] val port = config.getInt("MyApp.server.port")
[53] IO(Http) ? Http.Bind(service, interface = "0.0.0.0", port = port)
這個黑客行得通,但如果阿卡鍵改變,或者即使你引入了你自己的akka設置,祝你好運。正確的解決方案是以編程方式「配置」密鑰。 'sbt-assembly'似乎還沒有提供這樣的功能;也許可以通過sbt做自己。 – juanmirocks