I get the following error(stack trace at the end) when I try to compile my Scala project in Eclipse. It says that assertion failed on a Java class TransportConf (which is in a project spark-network-common which is specified in the Java Build Path). I checked the target folder and the TransportConf.class exists
Possible cause for issue as it was working before:
- I was merging code from upstream/master into my project and new dependencies were introduced. I normally run sbt {reload, eclipse with-source=true} and then refresh my eclipse projects. Is this the right approach?
Things I have done: - Update the spark-network-common compilation level to 1.6 as somehow the compilation level was set to 1.4 and I was getting errors for Java generics.
eclipse.buildId=3.0.3-20140327-1716-Typesafe
java.version=1.8.0_05
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments: -keyring /Users/rajivabraham/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -keyring /Users/rajivabraham/.eclipse_keyring -showlocation
Error
Thu Nov 27 07:52:19 EST 2014
Error in Scala compiler
java.lang.AssertionError: assertion failed: TransportConf
at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1212)
at scala.reflect.internal.Symbols$Symbol.baseTypeSeqLength$1(Symbols.scala:1628)
at scala.reflect.internal.Symbols$Symbol.isLess(Symbols.scala:1631)
at scala.reflect.internal.Types$Type.baseTypeIndex(Types.scala:992)
at scala.reflect.internal.Types$CompoundType.baseType(Types.scala:1655)
at scala.reflect.internal.Types$ClassTypeRef$class.baseType(Types.scala:2186)
at scala.reflect.internal.Types$TypeRef$$anon$6.baseType(Types.scala:2544)
at scala.reflect.internal.Types$class.firstTry$1(Types.scala:6043)
at scala.reflect.internal.Types$class.isSubType2(Types.scala:6207)
at scala.reflect.internal.Types$class.isSubType(Types.scala:5816)
at scala.reflect.internal.SymbolTable.isSubType(SymbolTable.scala:13)
at scala.reflect.internal.Types$Type.$less$colon$less(Types.scala:872)
at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1160)
at scala.tools.nsc.typechecker.Typers$Typer.adapt(Typers.scala:1102)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5660)
at scala.tools.nsc.typechecker.Typers$Typer.typedArg(Typers.scala:3042)
at scala.tools.nsc.typechecker.Typers$Typer.loop$1(Typers.scala:3069)
at scala.tools.nsc.typechecker.Typers$Typer.typedArgs(Typers.scala:3074)
at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$handleMonomorphicCall$1(Typers.scala:3354)
at scala.tools.nsc.typechecker.Typers$Typer.doTypedApply(Typers.scala:3398)
at scala.tools.nsc.typechecker.Typers$Typer.normalTypedApply$1(Typers.scala:4627)
at scala.tools.nsc.typechecker.Typers$Typer.typedApply$1(Typers.scala:4659)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5564)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5721)
at scala.tools.nsc.typechecker.Typers$Typer.computeType(Typers.scala:5808)
at scala.tools.nsc.typechecker.Namers$Namer.assignTypeToTree(Namers.scala:834)
at scala.tools.nsc.typechecker.Namers$Namer.valDefSig(Namers.scala:1315)
at scala.tools.nsc.typechecker.Namers$Namer.getSig$1(Namers.scala:1457)
at scala.tools.nsc.typechecker.Namers$Namer.typeSig(Namers.scala:1466)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply$mcV$sp(Namers.scala:731)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply(Namers.scala:730)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1$$anonfun$apply$1.apply(Namers.scala:730)
at scala.tools.nsc.typechecker.Namers$Namer.scala$tools$nsc$typechecker$Namers$Namer$$logAndValidate(Namers.scala:1499)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1.apply(Namers.scala:730)
at scala.tools.nsc.typechecker.Namers$Namer$$anonfun$monoTypeCompleter$1.apply(Namers.scala:729)
at scala.tools.nsc.typechecker.Namers$$anon$1.completeImpl(Namers.scala:1614)
at scala.tools.nsc.typechecker.Namers$LockingTypeCompleter$class.complete(Namers.scala:1622)
at scala.tools.nsc.typechecker.Namers$$anon$1.complete(Namers.scala:1612)
at scala.reflect.internal.Symbols$Symbol.info(Symbols.scala:1231)
at scala.reflect.internal.Symbols$Symbol.initialize(Symbols.scala:1374)
at scala.tools.nsc.typechecker.MethodSynthesis$MethodSynth$class.addDerivedTrees(MethodSynthesis.scala:225)
at scala.tools.nsc.typechecker.Namers$Namer.addDerivedTrees(Namers.scala:55)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$32.apply(Typers.scala:1917)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$32.apply(Typers.scala:1917)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$rewrappingWrapperTrees$1.apply(Typers.scala:1856)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$rewrappingWrapperTrees$1.apply(Typers.scala:1853)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251)
at scala.collection.immutable.List.foreach(List.scala:318)
at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:251)
at scala.collection.AbstractTraversable.flatMap(Traversable.scala:105)
at scala.tools.nsc.typechecker.Typers$Typer.typedTemplate(Typers.scala:1917)
at scala.tools.nsc.typechecker.Typers$Typer.typedClassDef(Typers.scala:1759)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5583)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
at scala.tools.nsc.typechecker.Typers$Typer.scala$tools$nsc$typechecker$Typers$Typer$$typedStat$1(Typers.scala:2928)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
at scala.tools.nsc.typechecker.Typers$Typer$$anonfun$61.apply(Typers.scala:3032)
at scala.collection.immutable.List.loop$1(List.scala:170)
at scala.collection.immutable.List.mapConserve(List.scala:186)
at scala.tools.nsc.typechecker.Typers$Typer.typedStats(Typers.scala:3032)
at scala.tools.nsc.typechecker.Typers$Typer.typedPackageDef$1(Typers.scala:5301)
at scala.tools.nsc.typechecker.Typers$Typer.typed1(Typers.scala:5587)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5642)
at scala.tools.nsc.typechecker.Typers$Typer.typed(Typers.scala:5704)
at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3.apply(Analyzer.scala:99)
at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:464)
at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3$$anonfun$run$1.apply(Analyzer.scala:91)
at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3$$anonfun$run$1.apply(Analyzer.scala:91)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at scala.tools.nsc.typechecker.Analyzer$typerFactory$$anon$3.run(Analyzer.scala:91)
at scala.tools.nsc.Global$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:123)
at xsbt.CachedCompiler0.run(CompilerInterface.scala:99)
at xsbt.CompilerInterface.run(CompilerInterface.scala:27)
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:483)
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 sbt.compiler.AggressiveCompile$$anonfun$3$$anonfun$compileScala$1$1.apply$mcV$sp(AggressiveCompile.scala:99)
at sbt.compiler.AggressiveCompile$$anonfun$3$$anonfun$compileScala$1$1.apply(AggressiveCompile.scala:99)
at sbt.compiler.AggressiveCompile$$anonfun$3$$anonfun$compileScala$1$1.apply(AggressiveCompile.scala:99)
at sbt.compiler.AggressiveCompile.sbt$compiler$AggressiveCompile$$timed(AggressiveCompile.scala:166)
at sbt.compiler.AggressiveCompile$$anonfun$3.compileScala$1(AggressiveCompile.scala:98)
at sbt.compiler.AggressiveCompile$$anonfun$3.apply(AggressiveCompile.scala:143)
at sbt.compiler.AggressiveCompile$$anonfun$3.apply(AggressiveCompile.scala:87)
at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:39)
at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:37)
at sbt.inc.IncrementalCommon.cycle(Incremental.scala:99)
at sbt.inc.Incremental$$anonfun$1.apply(Incremental.scala:38)
at sbt.inc.Incremental$$anonfun$1.apply(Incremental.scala:37)
at sbt.inc.Incremental$.manageClassfiles(Incremental.scala:65)
at sbt.inc.Incremental$.compile(Incremental.scala:37)
at sbt.inc.IncrementalCompile$.apply(Compile.scala:27)
at sbt.compiler.AggressiveCompile.compile2(AggressiveCompile.scala:157)
at sbt.compiler.AggressiveCompile.compile1(AggressiveCompile.scala:71)
at sbt.compiler.AggressiveCompile.apply(AggressiveCompile.scala:46)
at sbt.compiler.IC$.compile(IncrementalCompiler.scala:22)
at scala.tools.eclipse.buildmanager.sbtintegration.EclipseSbtBuildManager.runCompiler(EclipseSbtBuildManager.scala:133)
at scala.tools.eclipse.buildmanager.sbtintegration.EclipseSbtBuildManager.update(EclipseSbtBuildManager.scala:124)
at scala.tools.eclipse.buildmanager.sbtintegration.EclipseSbtBuildManager.build(EclipseSbtBuildManager.scala:178)
at scala.tools.eclipse.ScalaProject.build(ScalaProject.scala:666)
at scala.tools.eclipse.ScalaBuilder.build(ScalaBuilder.scala:119)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:733)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:299)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:302)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:358)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:381)
at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:514)
at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:423)
at org.eclipse.jdt.internal.ui.util.CoreUtility$BuildJob.run(CoreUtility.java:162)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
It's hard to give an answer here, and there's too many questions to put in comments, so my attempt is more a request for for information than a real answer.
This is most likely a bug in the Scala compiler. What Scala version are you using, and what version of Scala IDE are you using? Does the build work fine in Sbt?
Is your dependent project a Java project, or a Scala one? Does it build without errors?
If not already using 4.0-RC2, I would upgrade the Scala plugin to that version. I'm assuming your project is on some version in the Scala 2.10 range, so make sure you
Set the Scala installationto the right version (4.0-RC2 is only published for 2.11, but has multi-version support).