Scalac: Assertion failed while run Scalatest in IDEA - scala

Question

I am running a ScalaTest Suite inside Intellij IDEA, during the make phase before scala test, I run into this problem:
Error:scalac: Error: assertion failed: List(object package$DebugNode, object package$DebugNode)
java.lang.AssertionError: assertion failed: List(object package$DebugNode, object package$DebugNode)
at scala.reflect.internal.Symbols$Symbol.suchThat(Symbols.scala:1678)
at scala.reflect.internal.Symbols$ClassSymbol.companionModule0(Symbols.scala:2988)
at scala.reflect.internal.Symbols$ClassSymbol.companionModule(Symbols.scala:2991)
at scala.tools.nsc.backend.jvm.GenASM$JPlainBuilder.genClass(GenASM.scala:1371)
at scala.tools.nsc.backend.jvm.GenASM$AsmPhase.run(GenASM.scala:120)
at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1583)
at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1557)
at scala.tools.nsc.Global$Run.compileSources(Global.scala:1553)
at scala.tools.nsc.Global$Run.compile(Global.scala:1662)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:126)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:102)
at xsbt.CompilerInterface.run(CompilerInterface.scala:27)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:102)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:48)
at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:41)
at org.jetbrains.jps.incremental.scala.local.IdeaIncrementalCompiler.compile(IdeaIncrementalCompiler.scala:28)
at org.jetbrains.jps.incremental.scala.local.LocalServer.compile(LocalServer.scala:25)
at org.jetbrains.jps.incremental.scala.remote.Main$.make(Main.scala:64)
at org.jetbrains.jps.incremental.scala.remote.Main$.nailMain(Main.scala:22)
at org.jetbrains.jps.incremental.scala.remote.Main.nailMain(Main.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:606)
at com.martiansoftware.nailgun.NGSession.run(NGSession.java:319)
Is it a jetbrains error due to incremental compilation? or Its related to the Test Suite I was running? Nothing information in the stack trace are related to the TestSuite/project I was test on.

Answer 1

I think it was an error due to Interllij IDEA incremental compilation. I got the same error when I built Spark for the first time.
I went to Preferences > Scala, set Incrmental compilation by SBT incremental compiler, Name Hasing: Default, Compilation order: Mixed. Recompiled the code, everything was OK then.

Answer 2

I met such issue before, because I built the spark in command and then imported into IDEA, rebuild will see the two errors, solve it is very easy, just run "mvn clean" under root folder of spark in command line, then Make again in IDEA, the errors gone.
details of TestSQLContext.scala assertion failed ref to: http://www.dataguru.cn/thread-537920-1-1.html
and more details about build spark 1.4.1 on Linux ref to: http://www.dataguru.cn/thread-539343-1-1.html
fredericyuan