Neuw84 commented on PR #5032:
URL: https://github.com/apache/zeppelin/pull/5032#issuecomment-3210512987
Unmmm, looking at the docs I see this weird error. Seems like it is not
being able to launch the cluster, but a little bit lost here.
```
WARN [2025-08-21 11:04:10,021]
({flink-metrics-pekko.actor.supervisor-dispatcher-5}
SupervisorActor.java[rpcActorFailed]:144) - RpcActor
pekko://flink-metrics/user/rpc/MetricQueryService has failed. Shutting it down
now.
java.lang.NullPointerException
at
org.slf4j.impl.Reload4jMDCAdapter.setContextMap(Reload4jMDCAdapter.java:81)
at org.slf4j.MDC.setContextMap(MDC.java:264)
at org.apache.flink.util.MdcUtils.lambda$withContext$0(MdcUtils.java:48)
at
org.apache.flink.runtime.rpc.pekko.PekkoRpcActor.handleControlMessage(PekkoRpcActor.java:208)
at
org.apache.pekko.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:33)
at
org.apache.pekko.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:29)
at scala.PartialFunction.applyOrElse(PartialFunction.scala:127)
at scala.PartialFunction.applyOrElse$(PartialFunction.scala:126)
at
org.apache.pekko.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:29)
at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:175)
at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:176)
at org.apache.pekko.actor.Actor.aroundReceive(Actor.scala:547)
at org.apache.pekko.actor.Actor.aroundReceive$(Actor.scala:545)
at
org.apache.pekko.actor.AbstractActor.aroundReceive(AbstractActor.scala:229)
at org.apache.pekko.actor.ActorCell.receiveMessage(ActorCell.scala:590)
at org.apache.pekko.actor.ActorCell.invoke(ActorCell.scala:557)
at org.apache.pekko.dispatch.Mailbox.processMailbox(Mailbox.scala:280)
at org.apache.pekko.dispatch.Mailbox.run(Mailbox.scala:241)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:829)
WARN [2025-08-21 11:04:10,031] ({main}
HadoopUtils.java[getHadoopConfiguration]:139) - Could not find Hadoop
configuration via any of the supported methods (Flink configuration,
environment variables).
```
Any help is appreciated as the Exception do not provide much info....
Indeed the code that is present here is working at least for Scala and SQL
interfaces ( checked with some Notebooks) with Java 11.
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