[
https://issues.apache.org/jira/browse/FLINK-7442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16131779#comment-16131779
]
ASF GitHub Bot commented on FLINK-7442:
---------------------------------------
Github user aljoscha commented on the issue:
https://github.com/apache/flink/pull/4554
This is the exception I got with the class loader from
https://github.com/apache/flink/blob/fa11845b926f8371e9cee47775ca0e48176b686e/flink-contrib/flink-statebackend-rocksdb/src/test/java/org/apache/flink/contrib/streaming/state/RocksDbMultiClassLoaderTest.java:
```
org.apache.flink.client.program.ProgramInvocationException: Could not start
the ActorSystem needed to talk to the JobManager.
at
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:462)
at
org.apache.flink.client.program.StandaloneClusterClient.submitJob(StandaloneClusterClient.java:105)
at
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:443)
at
org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66)
at
org.apache.flink.streaming.tests.ClassLoaderTestProgram.main(ClassLoaderTestProgram.java:95)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:538)
at
org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:430)
at
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:383)
at
org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:840)
at org.apache.flink.client.CliFrontend.run(CliFrontend.java:285)
at
org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1088)
at org.apache.flink.client.CliFrontend$2.call(CliFrontend.java:1135)
at org.apache.flink.client.CliFrontend$2.call(CliFrontend.java:1132)
at
org.apache.flink.runtime.security.HadoopSecurityContext$1.run(HadoopSecurityContext.java:44)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1556)
at
org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1132)
Caused by: org.apache.flink.util.FlinkException: Could not start the
ActorSystem lazily.
at
org.apache.flink.client.program.ClusterClient$LazyActorSystemLoader.get(ClusterClient.java:235)
at
org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:460)
... 22 more
Caused by: com.typesafe.config.ConfigException$Missing: No configuration
setting found for key 'akka.version'
at com.typesafe.config.impl.SimpleConfig.findKey(SimpleConfig.java:124)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:145)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:151)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:159)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:164)
at
com.typesafe.config.impl.SimpleConfig.getString(SimpleConfig.java:206)
at akka.actor.ActorSystem$Settings.<init>(ActorSystem.scala:169)
at akka.actor.ActorSystemImpl.<init>(ActorSystem.scala:505)
at akka.actor.ActorSystem$.apply(ActorSystem.scala:142)
at akka.actor.ActorSystem$.apply(ActorSystem.scala:119)
at akka.actor.ActorSystem$.create(ActorSystem.scala:67)
at
org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtils.scala:106)
at
org.apache.flink.runtime.akka.AkkaUtils$.createActorSystem(AkkaUtils.scala:94)
at
org.apache.flink.runtime.akka.AkkaUtils.createActorSystem(AkkaUtils.scala)
at
org.apache.flink.client.program.ClusterClient$LazyActorSystemLoader.get(ClusterClient.java:231)
... 23 more
```
This is on the client but just seeing it makes me believe that that class
loader could cause problems.
> Add option for using a child-first classloader for loading user code
> --------------------------------------------------------------------
>
> Key: FLINK-7442
> URL: https://issues.apache.org/jira/browse/FLINK-7442
> Project: Flink
> Issue Type: Improvement
> Components: Local Runtime
> Reporter: Aljoscha Krettek
> Assignee: Aljoscha Krettek
>
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