[jira] [Created] (FLINK-8327) ClassLoader resolution of child-first does not appear to work

["Raymond Tay (JIRA)" <ji...@apache.org>]

Raymond Tay created FLINK-8327:
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             Summary: ClassLoader resolution of child-first does not appear to work
                 Key: FLINK-8327
                 URL: https://issues.apache.org/jira/browse/FLINK-8327
             Project: Flink
          Issue Type: Bug
          Components: Queryable State
    Affects Versions: 1.4.0
         Environment: h2. Description

Was trying out the {{Queryable State}} and ran into a problem where the submitted job starts regular Akka actors and making external HTTP calls via {{akka-http}} libraries and the flink runtime was complaining that it was not able to read the key {{akka.http}} (this key is held in the configuration file for {{akka-http}}).

When i ran our app on the {{sbt}} shell locally, it was able to see the key {{akka.http}} but when we submitted the fatjar (via {{sbt-assembly}}) to flink, it was throwing the error message (see below). Looks like a class loader issue but i'm not sure.

Any help is much appreciated !

h3. Environment
* Local flink cluster version 1.4.0
* {{classloader.resolve-order: child-first}} in {{conf/flink-conf.yaml}}.

h3. Library version
* akka actors 2.4.20
* akka http 10.0.10

h2. Error message
{noformat}
Caused by: com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'akka.http'
	at com.typesafe.config.impl.SimpleConfig.findKeyOrNull(SimpleConfig.java:152)
	at com.typesafe.config.impl.SimpleConfig.findOrNull(SimpleConfig.java:170)
	at com.typesafe.config.impl.SimpleConfig.findOrNull(SimpleConfig.java:176)
	at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:184)
	at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:189)
	at com.typesafe.config.impl.SimpleConfig.getObject(SimpleConfig.java:258)
	at com.typesafe.config.impl.SimpleConfig.getConfig(SimpleConfig.java:264)
	at com.typesafe.config.impl.SimpleConfig.getConfig(SimpleConfig.java:37)
	at akka.http.scaladsl.Http$.createExtension(Http.scala:843)
	at akka.http.scaladsl.Http$.createExtension(Http.scala:719)
	at akka.actor.ActorSystemImpl.registerExtension(ActorSystem.scala:917)
	at akka.actor.ExtensionId$class.apply(Extension.scala:79)
	at akka.http.scaladsl.Http$.apply(Http.scala:838)
	at akka.http.scaladsl.Http$.apply(Http.scala:719)
	at org.example.state.A.<init>(Simple.scala:158)
	... 18 more
{noformat}


            Reporter: Raymond Tay






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