Maven build error

[Gwynny]

Hi everyone!

I'm trying to build jar with maven in Google Colab and this error appears. Any suggestions? Maybe there is some requirements missing? Maybe I should change Maven or Scala versions? Notebook is here tap

[ERROR] error: scala.reflect.internal.MissingRequirementError: object java.lang.Object in compiler mirror not found. [ERROR] at scala.reflect.internal.MissingRequirementError$.signal(MissingRequirementError.scala:17) [ERROR] at scala.reflect.internal.MissingRequirementError$.notFound(MissingRequirementError.scala:18) [ERROR] at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:53) [ERROR] at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:45) [ERROR] at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:45) [ERROR] at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:66) [ERROR] at scala.reflect.internal.Mirrors$RootsBase.getClassByName(Mirrors.scala:102) [ERROR] at scala.reflect.internal.Mirrors$RootsBase.getRequiredClass(Mirrors.scala:105) [ERROR] at scala.reflect.internal.Definitions$DefinitionsClass.ObjectClass$lzycompute(Definitions.scala:257) [ERROR] at scala.reflect.internal.Definitions$DefinitionsClass.ObjectClass(Definitions.scala:257) [ERROR] at scala.reflect.internal.Definitions$DefinitionsClass.init(Definitions.scala:1394) [ERROR] at scala.tools.nsc.Global$Run.<init>(Global.scala:1215) [ERROR] at scala.tools.nsc.Driver.doCompile(Driver.scala:31) [ERROR] at scala.tools.nsc.MainClass.doCompile(Main.scala:23) [ERROR] at scala.tools.nsc.Driver.process(Driver.scala:51) [ERROR] at scala.tools.nsc.Driver.main(Driver.scala:64) [ERROR] at scala.tools.nsc.Main.main(Main.scala) [ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [ERROR] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [ERROR] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [ERROR] at java.base/java.lang.reflect.Method.invoke(Method.java:566) [ERROR] at scala_maven_executions.MainHelper.runMain(MainHelper.java:164) [ERROR] at scala_maven_executions.MainWithArgsInFile.main(MainWithArgsInFile.java:26) [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 7.209 s [INFO] Finished at: 2022-06-22T12:32:49Z [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal net.alchim31.maven:scala-maven-plugin:3.3.2:compile (default) on project spark-iforest: wrap: org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1) -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

[titicaca]

It looks like you are using Java 11, can you try with Java 8?

[Gwynny]

@titicaca Hi! I built the jar package, but I can't import lib as from pyspark_iforest.ml.iforest import *. Should I add something? You can replicate it here google colab Thank you!