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Why am I getting an OutOfMemoryError compilation error in Scala?

I am working on a Lift project and trying to compile it with scala:ccand the scala compilation server using jvm args:

-Xmx1024m  -Xss20m -XX:PermSize=64M -XX:MaxPermSize=512M -XX:+CMSClassUnloadingEnabled -XX:+CMSClassUnloadingEnabled

The error also occurs with jvm args:

-Xmx1024m  -Xss20m -XX:PermSize=64M -XX:MaxPermSize=512M

Result:

[INFO] Compiling 16 source files to /Users/axaluss/IdeaProjects/trunk/Team_Skynet/target/classes at 1299141180948
[ERROR] java.lang.OutOfMemoryError: Java heap space
[INFO]  at scala.tools.nsc.symtab.Types$class.typeRef(Types.scala:2503)
[INFO]  at scala.tools.nsc.symtab.SymbolTable.typeRef(SymbolTable.scala:13)
[INFO]  at scala.tools.nsc.symtab.Types$TypeMap.mapOver(Types.scala:2828)
[INFO]  at scala.tools.nsc.symtab.Types$AsSeenFromMap.apply(Types.scala:3209)
[INFO]  at scala.tools.nsc.symtab.Types$AsSeenFromMap.apply(Types.scala:3085)
[INFO]  at scala.tools.nsc.symtab.Types$TypeMap.mapOver(Types.scala:2849)
[INFO]  at scala.tools.nsc.symtab.Types$AsSeenFromMap.apply(Types.scala:3209)
[INFO]  at scala.tools.nsc.symtab.Types$Type.asSeenFrom(Types.scala:507)
[INFO]  at scala.tools.nsc.symtab.Types$Type.computeMemberType(Types.scala:531)
[INFO]  at scala.tools.nsc.symtab.Symbols$MethodSymbol.typeAsMemberOf(Symbols.scala:1774)
[INFO]  at scala.tools.nsc.symtab.Types$Type.memberType(Types.scala:522)
[INFO]  at scala.tools.nsc.symtab.Types$Type.findMember(Types.scala:858)
[INFO]  at scala.tools.nsc.symtab.Types$Type.nonPrivateMembers(Types.scala:453)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub0$1(Types.scala:4919)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub0$1(Types.scala:4873)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub(Types.scala:4943)
[INFO]  at scala.tools.nsc.symtab.SymbolTable.lub(SymbolTable.scala:13)
[INFO]  at scala.tools.nsc.symtab.Types$class.lubsym$1(Types.scala:4901)
[INFO]  at scala.tools.nsc.symtab.Types$$anonfun$38.apply(Types.scala:4924)
[INFO]  at scala.tools.nsc.symtab.Types$$anonfun$38.apply(Types.scala:4919)
[INFO]  at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:61)
[INFO]  at scala.collection.immutable.List.foreach(List.scala:45)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub0$1(Types.scala:4919)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub(Types.scala:4943)
[INFO]  at scala.tools.nsc.symtab.SymbolTable.lub(SymbolTable.scala:13)
[INFO]  at scala.tools.nsc.symtab.Types$class.lub(Types.scala:4863)
[INFO]  at scala.tools.nsc.symtab.SymbolTable.lub(SymbolTable.scala:13)
[INFO]  at scala.tools.nsc.symtab.Types$class.solveOne$1(Types.scala:4675)
[INFO]  at scala.tools.nsc.symtab.Types$$anonfun$solve$1.apply(Types.scala:4684)
[INFO]  at scala.tools.nsc.symtab.Types$$anonfun$solve$1.apply(Types.scala:4683)
[INFO]  at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:61)
[INFO]  at scala.collection.immutable.List.foreach(List.scala:45)
[ERROR] error: fatal error (server aborted): Java heap space
[ERROR] one error found

How can I solve this problem? I don’t know what causes this error, and haven’t found anything on Google other than an increase in memory.

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2 answers

Obviously you need to increase mx. One of Scala's problems is high memory consumption. Thanks to the widespread adoption of 64-bit processors and the server OS, as well as to the current surge in adoption of the 64-bit desktop OS, I expect this to be not very important.

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Source: https://habr.com/ru/post/1796238/

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